thank you. I was actually a bit worried that I wouldn't make enough levels or that they would be boring. Most of the time during the jam was spent programming a level editor.
And thanks for telling me about the skip. I did test each level when I made them, but stuff like that still got passed me. I think for that specific case, I added that doorway above to let the player in or out even if the lower door is locked. Plus the fact that items could get dropped/picked-up through doors doesn't help.