Didn't submit my own game on time, so unfortunately I wasn't able to rate this. But actually finishing and submitting a game is a feat in and of itself, so good job there!
So, I actually can't get out of the opening room. I pick up the key, and the door remains closed and I can't do anything else. Walked around the entire room but didn't find an alternate exit. So maybe that's a bug? Regardless, it's hard to give much for constructive feedback. I will say the player felt like they moved pretty slow to me. Which if the world isn't tightly packed, will get really old really quickly.
Great job though! Keep up the great work, and keep coding!