This is a super cool and promising game! I think what caught most of my attention is the UI. It is a fine UI. I'm pretty envious because of all that is on my "to learn" list. Improvements I would suggest would be the following:
- Currently the player is able to have all the different menu windows opened at the same time. I would keep it to only one. If i click on the achievements (which I love btw) and then click on my inventory, they're both open and it doesn't feel right.
- The escape button should probably only bring up the options menu when no other windows are open. I would have it set so that if i'm in the inventory screen or the achievements or the help, escape just closes that window.
I think that's the best criticism/suggestions I can offer. I definitely would follow future development, and the "Evolve Your Metroidvania" game jam would be interesting.