It's pretty neat, the shooting is pretty serviceable and accumulating items make you feel more powerful as the game goes on. I think the art style and models are actually pretty charming, reminds me of Risk of Rain if it was going for a surreal 1980's CGI look. The only critiques I have is that each enemy has the same simple A.I so all you really do is kite around a horde of enemies and dump rounds into them until something dies, and while the shooting feels fine the movement is a bit stiff, along with R-ON feeling like the best character since you can kill an enemy in one clip. Overall I think it's a pretty good base for a rouge-like, just needs to add more mechanics to be fun and engaging for an extended amount of time.
Might've gone into a bit too much detail for something like this lol, but I think it's pretty cool that you made this in a little over 2 weeks and I also think that it can be expanded into a cooler game ¯\_(ツ)_/¯