diff --git a/p2/game.h b/p2/game.h
index b31cdd2..a906464 100644
--- a/p2/game.h
+++ b/p2/game.h
@@ -42,9 +42,9 @@ struct monster_t {
 	int16_t x_velocity; // 0x8
 	int16_t y_velocity; // 0xA
 	const uint8_t *anim; // 0xC
-	uint8_t unkE; // 0xE
-	uint8_t unkF; // 0xF
-	uint8_t unk10;
+	uint8_t state; // 0xE
+	uint8_t energy; // 0xF
+	uint8_t unk10; // 0x10
 };
 
 struct thing_t {
@@ -67,6 +67,7 @@ struct object_t {
 	uint8_t hit_counter; // 0x11
 }; // sizeof == 18
 
+#define MONSTERS_COUNT 12
 #define OBJECTS_COUNT 108
 // offset count
 //      0     1 : club
diff --git a/p2/level.c b/p2/level.c
index 5984e61..dae13da 100644
--- a/p2/level.c
+++ b/p2/level.c
@@ -1,4 +1,6 @@
 
+/* level main loop */
+
 #include "game.h"
 #include "resource.h"
 #include "sys.h"
@@ -93,10 +95,12 @@ static void load_level_data_init_animated_tiles() {
 }
 
 static void load_level_data_init_transparent_tiles() {
+	const int tiles_offset = g_vars.tilemap_size + 512;
+	const int tiles_count = (g_res.levellen - tiles_offset) / 128;
 	int count = 1;
-	for (int i = 0; i < 256; ++i) {
+	for (int i = 0; i < tiles_count; ++i) {
 		const uint8_t num = i;
-		const uint8_t *tiledat = g_res.leveldat + g_vars.tilemap_size + 512 + num * 128;
+		const uint8_t *tiledat = g_res.leveldat + tiles_offset + num * 128;
 		uint8_t mask_opaque = 0xFF;
 		uint8_t mask_transparent = 0;
 		for (int j = 0; j < 128; ++j) {
@@ -892,8 +896,8 @@ static void level_reset_objects() {
 		obj->spr_num = 0xFFFF;
 		obj->hit_counter = 0;
 	}
-	g_vars.objects_tbl[1].x_pos = g_res.level.start_x_pos;
-	g_vars.objects_tbl[1].y_pos = g_res.level.start_y_pos;
+	g_vars.objects_tbl[1].x_pos = (g_options.start_xpos16 < 0) ? g_res.level.start_x_pos : g_options.start_xpos16;
+	g_vars.objects_tbl[1].y_pos = (g_options.start_ypos16 < 0) ? g_res.level.start_y_pos : g_options.start_ypos16;
 }
 
 static void level_reset() {
@@ -932,7 +936,7 @@ static uint16_t level_get_player_tile_pos() {
 	return (y << 8) | x;
 }
 
-static void level_add_object75_score(struct object_t *ref_obj, int num) {
+static struct object_t *level_add_object75_score(struct object_t *ref_obj, int num) {
 	const int score_index = num - 74;
 	if (score_index >= 0 && score_index <= 16) {
 		g_vars.score += score_tbl[score_index];
@@ -951,9 +955,10 @@ static void level_add_object75_score(struct object_t *ref_obj, int num) {
 					item->spr_num = 0xFFFF;
 				}
 			}
-			break;
+			return obj;
 		}
 	}
+	return 0;
 }
 
 static void level_update_object_anim(const uint8_t *anim) {
@@ -1054,13 +1059,57 @@ static bool level_objects_collide(const struct object_t *si, const struct object
 	return (a + b > d);
 }
 
-static bool level_collide_axe_monsters(struct object_t *obj) {
-	for (int i = 0; i < 12; ++i) {
+static void level_monster_die(struct object_t *obj, struct level_monster_t *m) {
+	const int num = m->unk8 + 74;
+	static const uint8_t data[] = { 1, 2, 3, 4, 6, 8 };
+	int count = data[obj->data.m.unk10 & 7];
+	const int x_pos = obj->x_pos;
+	const int y_pos = obj->y_pos;
+	do {
+		struct object_t *score_obj = level_add_object75_score(obj, num);
+		if (score_obj) {
+			score_obj->data.t.counter = count << 2;
+		}
+		obj->y_pos += 7;
+		obj->x_pos += 9;
+	} while (--count != 0);
+	obj->x_pos = x_pos;
+	obj->y_pos = y_pos;
+	obj->data.m.state = 0xFF;
+	if ((m->flags & 1) == 0) {
+		g_vars.current_bonus.x_pos = obj->x_pos;
+		g_vars.current_bonus.y_pos = obj->y_pos;
+		g_vars.current_bonus.spr_num = 0x2046;
+		level_add_object23_bonus(48, -128, 6);
+	} else {
+	}
+}
+
+static bool level_collide_axe_monsters(struct object_t *axe_obj) {
+	for (int i = 0; i < MONSTERS_COUNT; ++i) {
 		struct object_t *obj = &g_vars.objects_tbl[11 + i];
 		if (obj->spr_num == 0xFFFF) {
 			continue;
 		}
-		print_warning("Unhandled level_collide_axe_monsters object %d", 11 + i);
+		if (obj->data.m.state == 0xFF) {
+			continue;
+		}
+		struct level_monster_t *m = obj->data.m.ref;
+		if (m->flags & 0x10) {
+			continue;
+		}
+		if (!level_objects_collide(axe_obj, obj)) {
+			continue;
+		}
+		obj->data.m.unk5 |= 0x40;
+		if (obj->data.m.energy < g_vars.player_club_power) {
+			level_monster_die(obj, m);
+		} else {
+			obj->data.m.energy -= g_vars.player_club_power;
+			obj->x_pos -= obj->data.m.x_velocity >> 2;
+		}
+		obj->spr_num = 0xFFFF;
+		return true;
 	}
 	return false;
 }
@@ -1235,12 +1284,16 @@ extern void monster_func1(int type, struct object_t *obj); /* update */
 extern bool monster_func2(int type, struct level_monster_t *m); /* init */
 
 static void level_update_objects_monsters() {
+	if (!g_res.dos_demo) {
+		/* different monsters logic/tables */
+		return;
+	}
 	if (g_res.level.monsters_state != 0xFF) {
 		level_update_monsters_state();
 	}
 	if (g_vars.level_num == 5 && (g_res.level.scrolling_mask & ~1) == 0) {
 	}
-	for (int i = 0; i < 12; ++i) {
+	for (int i = 0; i < MONSTERS_COUNT; ++i) {
 		struct object_t *obj = &g_vars.objects_tbl[11 + i];
 		if (obj->spr_num == 0xFFFF) {
 			continue;
@@ -2213,7 +2266,7 @@ static void level_update_player_collision() {
 	struct object_t *obj_player = &g_vars.objects_tbl[1];
 	/* monsters */
 	if (g_vars.objects_tbl[1].hit_counter == 0) {
-		for (int i = 0; i < 12; ++i) {
+		for (int i = 0; i < MONSTERS_COUNT; ++i) {
 			struct object_t *obj = &g_vars.objects_tbl[11 + i];
 			if (obj->spr_num == 0xFFFF || (obj->spr_num & 0x2000) == 0) {
 				continue;
@@ -2222,7 +2275,7 @@ static void level_update_player_collision() {
 			if (m->flags & 0x10) {
 				continue;
 			}
-			if (obj->data.m.unkE == 0xFF) {
+			if (obj->data.m.state == 0xFF) {
 				continue;
 			}
 			if (!level_objects_collide(obj_player, obj)) {
@@ -2372,7 +2425,7 @@ static void level_update_player_collision() {
 			}
 		} else if (num == 169) {
 			play_sound(0);
-			for (int i = 0; i < 12; ++i) {
+			for (int i = 0; i < MONSTERS_COUNT; ++i) {
 				struct object_t *obj = &g_vars.objects_tbl[11 + i];
 				if (obj->spr_num == 0xFFFF) {
 					continue;
@@ -2387,7 +2440,7 @@ static void level_update_player_collision() {
 			level_add_object75_score(obj, 230);
 		} else if (num == 170) { /* bomb */
 			play_sound(0);
-			for (int i = 0; i < 12; ++i) {
+			for (int i = 0; i < MONSTERS_COUNT; ++i) {
 				struct object_t *obj = &g_vars.objects_tbl[11 + i];
 				if (obj->spr_num == 0xFFFF) {
 					continue;
@@ -2397,7 +2450,7 @@ static void level_update_player_collision() {
 				}
 				g_vars.current_bonus.x_pos = obj->x_pos;
 				g_vars.current_bonus.y_pos = obj->y_pos;
-				obj->data.m.unkE = 0xFF;
+				obj->data.m.state = 0xFF;
 				obj->spr_num = 0xFFFF;
 				int x_vel = 32;
 				int y_vel = -160;
@@ -3054,6 +3107,7 @@ void do_level() {
 	set_level_palette();
 	video_load_sprites();
 	video_load_front_tiles();
+	video_clear();
 	level_reset();
 	level_reset_objects();
 	level_init_tilemap();
diff --git a/p2/monsters.c b/p2/monsters.c
index e172dcd..fe4968b 100644
--- a/p2/monsters.c
+++ b/p2/monsters.c
@@ -1,11 +1,13 @@
 
+/* monsters logic */
+
 #include "game.h"
 #include "resource.h"
 #include "util.h"
 
 static void monster_func1_helper(struct object_t *obj, int16_t x_pos, int16_t y_pos) {
 	struct level_monster_t *m = obj->data.m.ref;
-	if (obj->data.m.unkE == 0xFF) {
+	if (obj->data.m.state == 0xFF) {
 		return;
 	}
 	if (obj->spr_num & 0x2000) {
@@ -18,7 +20,7 @@ static void monster_func1_helper(struct object_t *obj, int16_t x_pos, int16_t y_
 			return;
 		}
 	}
-	if (obj->data.m.unkE < 10) {
+	if (obj->data.m.state < 10) {
 		obj->spr_num = 0xFFFF;
 		m->flags &= ~4;
 		m->current_tick = 0;
@@ -65,7 +67,7 @@ static struct rotation_t *find_rotation() {
 	return 0;
 }
 
-static void monster_rotate_pos(struct level_monster_t *m, int index, int step) {
+static void monster_rotate_platform(struct level_monster_t *m, int index, int step) {
 	step >>= 2;
 	uint8_t radius = step;
 	for (int i = 0; i < 3; ++i) {
@@ -80,6 +82,12 @@ static void monster_rotate_pos(struct level_monster_t *m, int index, int step) {
 	}
 }
 
+static void monster_rotate_pos(struct object_t *obj, struct level_monster_t *m) {
+	obj->x_pos = m->x_pos + ((m->type4.unkD * (cos_tbl[m->type4.angle] >> 2)) >> 4);
+	obj->y_pos = m->y_pos + ((m->type4.unkD * (sin_tbl[m->type4.angle] >> 2)) >> 4);
+	monster_rotate_platform(m, m->type4.angle, m->type4.unkD);
+}
+
 static void monster_update_y_velocity(struct object_t *obj, struct level_monster_t *m) {
 	if ((m->flags & 1) != 0 && ((obj->spr_num & 0x2000) != 0 || g_vars.objects_tbl[1].y_pos >= obj->y_pos)) {
 		if (obj->data.m.y_velocity < 240) {
@@ -98,27 +106,61 @@ static void monster_update_y_velocity(struct object_t *obj, struct level_monster
 static void monster_func1_type2(struct object_t *obj) {
 	monster_func1_helper(obj, obj->x_pos, obj->y_pos);
 	struct level_monster_t *m = obj->data.m.ref;
-	uint8_t al = obj->data.m.unkE;
-	if (al < 2) {
-		monster_rotate_pos(m, 0, obj->y_pos - m->y_pos);
-		if (al == 0) {
+	const uint8_t state = obj->data.m.state;
+	if (state < 2) {
+		monster_rotate_platform(m, 0, obj->y_pos - m->y_pos);
+		if (state == 0) {
 			obj->data.m.y_velocity = m->type2.unkE << 4;
 			const int dy = obj->y_pos - m->y_pos;
 			if (m->type2.y_range >= dy) {
 				return;
 			}
-			obj->data.m.unkE = 1;
+			obj->data.m.state = 1;
 			monster_change_next_anim(obj);
-		} else if (al == 1) {
+		} else if (state == 1) {
 			obj->data.m.y_velocity = m->type2.unkE << 4;
 			const int dy = obj->y_pos - m->y_pos;
 			if (dy >= 0) {
 				return;
 			}
-			obj->data.m.unkE = 0;
+			obj->data.m.state = 0;
 			monster_change_prev_anim(obj);
 		}
-	} else if (al == 0xFF) {
+	} else if (state == 0xFF) {
+		monster_update_y_velocity(obj, m);
+	}
+}
+
+static void monster_func1_type4(struct object_t *obj) {
+	monster_func1_helper(obj, obj->x_pos, obj->y_pos);
+	struct level_monster_t *m = obj->data.m.ref;
+	const uint8_t state = obj->data.m.state;
+	if (state == 0) {
+		if (monster_next_tick(m)) {
+			return;
+		}
+		const int dy = obj->y_pos - m->y_pos;
+		monster_rotate_platform(m, 0, dy);
+		if (m->type4.unkD > dy) {
+			obj->y_pos += 2;
+		} else {
+			obj->data.m.state = 1;
+		}
+	} else if (state == 1) {
+		monster_rotate_pos(obj, m);
+		m->type4.angle += 4;
+		if (m->type4.angle >= m->type4.unkE) {
+			m->type4.angle = m->type4.unkE;
+			obj->data.m.state = 2;
+		}
+	} else if (state == 2) {
+		if (m->type4.angle & 0x80) {
+			++m->type4.unk10;
+		} else {
+			--m->type4.unk10;
+		}
+		m->type4.angle = m->type4.unk10;
+	} else if (state == 0xFF) {
 		monster_update_y_velocity(obj, m);
 	}
 }
@@ -130,8 +172,8 @@ static void monster_func1_type8(struct object_t *obj) {
 		const int dx = (obj->x_pos <= g_vars.objects_tbl[1].x_pos) ? 1 : -1;
 		obj->data.m.x_velocity = dx;
 	}
-	uint8_t al = obj->data.m.unkE;
-	if ((al == 0 && !monster_next_tick(m)) || (al == 12 && !monster_next_tick(m))) {
+	const uint8_t state = obj->data.m.state;
+	if ((state == 0 && !monster_next_tick(m)) || (state == 12 && !monster_next_tick(m))) {
 		const int dx = abs(g_vars.objects_tbl[1].x_pos - obj->x_pos);
 		if (m->type8.x_range < (dx >> 4)) {
 			return;
@@ -146,40 +188,61 @@ static void monster_func1_type8(struct object_t *obj) {
 			x_vel = -x_vel;
 		}
 		obj->data.m.x_velocity = x_vel;
-		obj->data.m.unkE = 10;
+		obj->data.m.state = 10;
 		m->flags = (m->flags & ~0x2C) | 0x2C;
 		monster_change_next_anim(obj);
-	} else if (al == 10) {
+	} else if (state == 10) {
 		if (obj->data.m.y_velocity < 0) {
 			return;
 		}
-		obj->data.m.unkE = 11;
+		obj->data.m.state = 11;
 		monster_change_next_anim(obj);
-	} else if (al == 11) {
+	} else if (state == 11) {
 		if (obj->data.m.y_velocity > 0) {
 			return;
 		}
-		obj->data.m.unkE = 12;
+		obj->data.m.state = 12;
 		monster_change_prev_anim(obj);
 		monster_change_prev_anim(obj);
 		obj->data.m.x_velocity = 0;
 		m->current_tick = 0;
-	} else if (al == 0xFF) {
+	} else if (state == 0xFF) {
 		monster_update_y_velocity(obj, m);
 	}
 }
 
 static void monster_func1_type9(struct object_t *obj) {
 	struct level_monster_t *m = obj->data.m.ref;
-	if ((obj->spr_num & 0x2000) == 0 && obj->data.m.unkE != 0xFF) {
-	} else {
-		uint8_t al = obj->data.m.unkE;
-		if (al == 0) {
-		} else if (al == 1) {
-		} else if (al == 0xFF) {
-			monster_update_y_velocity(obj, m);
+	if ((obj->spr_num & 0x2000) == 0 && obj->data.m.state != 0xFF) {
+		const int dy = abs(obj->y_pos - g_vars.objects_tbl[1].y_pos);
+		if (dy >= 190 || (g_vars.objects_tbl[1].x_pos < m->type9.unkD && g_vars.objects_tbl[1].x_pos + 480 < m->type9.unkD) || (g_vars.objects_tbl[1].x_pos >= m->type9.unkD && m->type9.unkF + 480 <= g_vars.objects_tbl[1].x_pos)) {
+			obj->spr_num = 0xFFFF;
+			m->flags &= ~4;
+			return;
 		}
 	}
+	const uint8_t state = obj->data.m.state;
+	if (state == 0) {
+		obj->data.m.x_velocity = m->type9.unk11;
+		const int x = m->type9.unk11 + 3;
+		if (x <= m->type9.unk12) {
+			m->type9.unk11 = x;
+		}
+		if (m->type9.unkF < obj->x_pos) {
+			obj->data.m.state = 1;
+		}
+	} else if (state == 1) {
+		obj->data.m.x_velocity = m->type9.unk11;
+		const int x = m->type9.unk11 - 3;
+		if (x >= -m->type9.unk12) {
+			m->type9.unk11 = x;
+		}
+		if (m->type9.unkD >= obj->x_pos) {
+			obj->data.m.state = 1;
+		}
+	} else if (state == 0xFF) {
+		monster_update_y_velocity(obj, m);
+	}
 }
 
 void monster_func1(int type, struct object_t *obj) {
@@ -190,6 +253,9 @@ void monster_func1(int type, struct object_t *obj) {
 	case 2:
 		monster_func1_type2(obj);
 		break;
+	case 4:
+		monster_func1_type4(obj);
+		break;
 	case 8:
 		monster_func1_type8(obj);
 		break;
@@ -203,7 +269,7 @@ void monster_func1(int type, struct object_t *obj) {
 }
 
 static struct object_t *find_object_monster() {
-	for (int i = 0; i < 12; ++i) {
+	for (int i = 0; i < MONSTERS_COUNT; ++i) {
 		struct object_t *obj = &g_vars.objects_tbl[11 + i];
 		if (obj->spr_num == 0xFFFF) {
 			return obj;
@@ -224,8 +290,8 @@ static bool monster_init_object(struct level_monster_t *m) {
 		m->flags = 0x17;
 		obj->data.m.x_velocity = 0;
 		obj->data.m.y_velocity = 0;
-		obj->data.m.unkE = 0;
-		obj->data.m.unkF = m->unk5;
+		obj->data.m.state = 0;
+		obj->data.m.energy = m->energy;
 		return true;
 	}
 	return false;
@@ -253,24 +319,22 @@ static bool monster_func2_type1(struct level_monster_t *m) {
 }
 
 static bool monster_func2_type2(struct level_monster_t *m) {
-	const int16_t x_pos = m->x_pos;
-	const int16_t y_pos = m->y_pos;
-	if (!monster_is_visible(x_pos, y_pos)) {
+	if (!monster_is_visible(m->x_pos, m->y_pos)) {
 		return false;
 	}
 	struct object_t *obj = find_object_monster();
 	if (obj) {
 		obj->data.m.unk10 = 0;
 		g_vars.monster.current_object = obj;
-		obj->x_pos = x_pos;
-		obj->y_pos = y_pos;
+		obj->x_pos = m->x_pos;
+		obj->y_pos = m->y_pos;
 		obj->spr_num = m->spr_num;
 		obj->data.m.ref = m;
 		m->flags = 5;
 		obj->data.m.y_velocity = 0;
 		obj->data.m.x_velocity = 0;
-		obj->data.m.unkE = 0;
-		obj->data.m.unkF = m->unk5;
+		obj->data.m.state = 0;
+		obj->data.m.energy = m->energy;
 		return true;
 	}
 	return false;
@@ -315,6 +379,19 @@ static bool monster_func2_type10(struct level_monster_t *m) {
 	if (m->total_ticks > (m->current_tick >> 2)) {
 		return false;
 	}
+	const int dx = (g_vars.objects_tbl[1].x_pos >> 4) - m->x_pos;
+	if (dx < 0) {
+		return false;
+	}
+	const int dy = (g_vars.objects_tbl[1].y_pos >> 4) - m->y_pos;
+	if (dy < 0) {
+		return false;
+	}
+	struct object_t *obj = find_object_monster();
+	if (!obj) {
+		return false;
+	}
+	print_warning("monster_func2_type10 6579");
 	return true;
 }
 
diff --git a/p2/resource.c b/p2/resource.c
index aa3f45e..60b25b7 100644
--- a/p2/resource.c
+++ b/p2/resource.c
@@ -123,7 +123,7 @@ void load_leveldat(const uint8_t *p, struct level_t *level) {
 		m->len = len;
 		m->type = p[1];
 		m->spr_num = spr_num;
-		m->unk5 = p[5];
+		m->energy = p[5];
 		m->total_ticks = p[6];
 		m->current_tick = p[7];
 		m->unk8 = p[8];
@@ -133,12 +133,23 @@ void load_leveldat(const uint8_t *p, struct level_t *level) {
 		case 2:
 			m->type2.y_range = p[0xD];
 			m->type2.unkE = p[0xE];
+		case 4:
+			m->type4.unkD = p[0xD];
+			m->type4.unkE = p[0xE];
+			m->type4.angle = p[0xF];
+			m->type4.unk10 = p[0x10];
+			break;
 		case 8:
 			m->type8.x_range = p[0xD];
 			m->type8.unkE = p[0xE];
 			m->type8.unkF = p[0xF];
 			m->type8.y_range = p[0x10];
 			break;
+		case 9:
+			m->type9.unkD = READ_LE_UINT16(p + 0xD);
+			m->type9.unkF = READ_LE_UINT16(p + 0xF);
+			m->type9.unk11 = p[0x11];
+			m->type9.unk12 = p[0x12];
 		default:
 			break;
 		}
diff --git a/p2/resource.h b/p2/resource.h
index d8fc296..620a6b9 100644
--- a/p2/resource.h
+++ b/p2/resource.h
@@ -63,7 +63,7 @@ struct level_monster_t {
 	uint8_t type;
 	uint16_t spr_num; // 0x2
 	uint8_t flags; // 0x4
-	uint8_t unk5;
+	uint8_t energy; // 0x5
 	uint8_t total_ticks;
 	uint8_t current_tick;
 	uint8_t unk8;
@@ -74,12 +74,24 @@ struct level_monster_t {
 			uint8_t y_range; // 0xD
 			int8_t unkE; // 0xE, cbw
 		} type2;
+		struct {
+			uint8_t unkD;
+			uint8_t unkE;
+			uint8_t angle;
+			uint8_t unk10;
+		} type4;
 		struct {
 			uint8_t x_range; // 0xD
 			int8_t unkE; // 0xE, cbw
 			int8_t unkF; // 0xF, cbw
 			uint8_t y_range; // 0x10
 		} type8;
+		struct {
+			int16_t unkD; // 0xD
+			int16_t unkF; // 0xF
+			int8_t unk11; // 0x11
+			uint8_t unk12; // 0x12
+		} type9;
 	};
 };