agh, i was playing with a trackpad yesterday and couldn't figure out how to beat those last two levels--glad i came back and saw your comment! now that i've gotten all the way through, i had a good time!
one bug i found: in level five, if the adventurer gets past you, they get stuck on the upward slope and never make it to the treasure. thankfully the reset button lets you try again, but it was kinda weird to have a level you couldn't technically lose.
usually i'd want the brightness at least a bit higher, but i think it fits both the setting and the type of gameplay, since you're not having to carefully move around a character. the challenge seemed right on--some levels took me a couple tries, but the only real issue i had was with the mouse wheel stuff (which is an easy fix). good job, and congrats on the jam!