The idea is nice and the art looks good but the game needs some polishing and tuning. The melee weapon are hard to use since it puts the player near the enemies and I can't dodge quickly after attacking. The ranged weapon are better but the bullet size is so small and sometimes hard to see. The visual feedback for damage is sometimes hard to notice. A health bar for the boss would be very appreciated. Other than that, the game is really fun and the procedural generation increases the replay value a lot. Nicely done.