Here's my feedback:
- unique game mechanic, successfully combined bullet hell + card game
- Music & sfx very cool
- Different attack types (player & boss) made the game more interesting
- Warning sign before the boss's attacks is nice touch.
- Player collision feels fine
what can be improved:
- mouse position feels redundant since the boss is always at the center
- lens distortion a little bit too strong (or maybe it's just me)
- pixel size not consistent, for example: the bullet
- consider giving feedback when player tries to shoot while MANA is not enough
- maybe provide more room for player to breathe. Constant dodging can get a bit tiring
This is just my perspective, feel free to take it with a grain of salt. Overall, good job!
