I built the levels in one night, pretty much. There wasn't really a "workflow", I just did what sounded fun. We used a gridmap and I was given objects to work with. After learning what each did, I built each "room" one at a time, then added shortcuts at the end so there wasn't backtracking to worry about. I built it in a upwards spiral, so the pit was always at the center, and easily accessible. Then we had some friends test it and adjusted accordingly-- some of the jumps and hidden buttons were a little too mean lol.