Grats on the submission! There are some nice ideas in here with the items, inventory, and looking at clues in the rooms. I noticed one of the key rooms early on is just a big room with the key on one side and the doorway on the other. Maybe something can be introduced to put some challenge to getting these items (e.g. like something that shoots projectiles you that you have to dodge as you get to the key). Maybe the full code for a keypad door can be spread across different rooms. Anyway nice job :)