Thanks for the feedback!
Yes, I'm kinda gathering that's the biggest weakpoint (the controls), so I'll note that for any future projects.
As far as variety, I kinda just ran out of time/ideas :/ I was hoping to add about 3 enemies, and then different buffs and chest rooms and stuff, but I guess it was kind of overscoped for a project made in a month :P
It's infinite, also thanks!