Wow great game, i love it! Gives a Gungeon vibes haha. Here are some minor details if you wish to polish it:
Agility character: after dash gain too much speed, especially bad if there is spikes on the next room.
Taking weapon from treasure, changes visual but don't change shots.
If starts roll touching a box, it isn't destroyed.
Ninjas running away on the wall can't attack, the shuriken is instantiated on the wall.(intended?)
The low fire-rate weapons are too weak, the shot from the energy gun shouldn't be destroyed so easily.
boss is too easy with a high fire-rate weapon.
Overall a very fun game.