Game is really funny and the music in the tutorial give a really good feeling :)
As Feedbacks & Suggestions, I would say :
- remove the web version, it's ruining the game because of low FPS
- make the tutorial much more easy
- we learn too much in a short time
- show 1 feature then make a little level with only this one
- show a 2nd and make a little level with the 1rst and the 2nd
- keep repeating the process slowly
- you don't need to write TUTORIAL, just make levels
- (portal is a nice example of learning without writing TUTORIAL)
- add sound design (I know it's an early build but it's really important)
- screenshake when you die ?
- I don't get why I don't die everytime I hit a wall. Is this normal ?