This is a lovely little crawler, and I say 'little' in terms of game, not filesize -1gb is absolutely criminal! I'm sure this is a learning experience and hopefully you can get that down to something more manageable in the future.
I think the combat system is really well implemented and well tuned. It's simple by very engaging. Like CryptRat mentioned, it does incentivise pooling resources between fights, but I personally didn't mind it too much.
The movement controller is decent, I think some others have touched on potential improvements, but it's an excellent attempt for a first crawlers. The perspective is great as it is.
The art is perfect as it is, the hand drawn aesthetic worked perfectly. This was a fun game, which didn't outstay its welcome. Thanks!