This a great game. it feels quite polished too!
Little things i liked:
- The how to play menu + tutorial messages
- The upgrade screen appeared to have a lot of depth to it!
- Doors to the next levels always seemed to face the north, nice an visible
- The message when the room is complete.
I never felt lost! which considering the game has several weapons is pretty cool.
Perhaps the cover art could be improved? I don't have any tips though!