I liked this a lot :3 Despite the simplicity and short length, you managed to convey an interesting story!
2.5D style is cool, reminded me of old-school children cartoons for some reason
The music was great. Major props to the sound person in your team!
Now, the Critique...
I got a bug where the monster movement sound would play regardless of whether I was holding Q or not. And, speaking of the monster sound - the whole gameplay mechanic of "hiding on the opposite side of where the sound is coming from" wasn't very intuitive... the directional value (value?) of the sound was barely noticeable, and there wasn't any other indications that that's how the hiding aspect worked in the first place.
But overall, the game's good!