Ok, so, at the end of the level, there is a jumping section with beds and a green barrel which releases a green token.
Is this token what grants you access to the electric switch on the upper right corner of the room?

I always miss reaching the token before it disappears, and given how slightly imprecise the game can be, I'm very much afraid of possible timed jumping puzzles.

I tried checking a video guide on youtube, but the only guy who posted footage of this game plays with God Mode on, so he walks away unscathed even if he screws up big time...

I know I could abuse god mode to finish the level, but I'd like to see if I can do it legit, seems just more fun to me.

I'm having this exact problem, and the only video I could find on Youtube was the guy playing in god mode... haha
Yeah I am totally stumped and stuck on that level. I would be real happy to figure out the solution. I'm hoping you don't have to grab that green coin.

very interesting. I had trouble with dave and haunted mansion, the first level you try to get into a gate, but its locked. i figured out you have to jump on the tree in order to jump over the gate. was an easy one to figure out for most people, i took a little bit to get it.