I found endings 1, 3, and 4, and hints for ending 2? I’m stuck where heltenjon was on the AGS forums.
Ending 2 progress
I can get the sheet music and give it to Robo, but I haven't found a way for that to change anything. I can try running from the cop, and hide next to my house instead of next to the bar, but that doesn't seem to change anything either. I can't get the cop to go inside the school, I get arrested outside instead. And I can't get anything to fall from the tree onto the cop, the sheet music only appears in the other tree that can't be reached during the chase.I haven’t found a way to run from the shape monster, or to get the screen to react to anything other than the small square, or to sleep on the bench instead of Coney’s bed, or to do something like find another instrument to jam with Robo.