Hi, thanks for the detailed feedback! To address your concerns:
The tearing of tiles is an engine issue unfortunately, I'm going to do some research on that but I believe it has to do with the upscaling of sprites.
I thought the slow fall tutorial was straightforward but I can make the signs bigger if that helps?
You're right actually I probably should add more sounds.
The jumping on skeletons is actually completely intended, they aren't even enemies really. I thought it would be neat to use them in a lot of different ways
The shuriken controls should just throw in the direction you're facing, unless you played an older version? In the tutorial, did you have to go into ball form at the end to sneak out of the safe room?