I fucked up, i couldn't finish the tutorial.
I got as far as lowering/raising the cages, but couldn't figure out what the point of the cages was (i only spotted the door in the video playthrough PHI made). Maybe just poke a hole through the wooden ceiling so there's a beam of light falling on the door, so dumbos like me can spot it more easily?
I've also spotted the ladder after i've already successfully bubbled my way up a few times (and fell), maybe it's that wood material throwing me off.
Gun feels nice and the bubbles are neat, really fun to mess around with, wish there were more mechanics in the demo!