Hey just tried it out, pretty neat! The sprite work is really cute.
Pretty solid coding for what's here and the idea is nice. I like the difference in shooting types & the plant one is pretty cool. The resistances and critical hits are a good implementation of the idea.
Beyond that it did feel pretty same-y with the enemies. With some move variety in attack types from them it might feel a little more engaging.
But also everything works plus you got a title screen and how to play set up, making your entry feel fully put together.