Like many other have mentioned, platforming around is really difficult (If i have to point out why, I'd say the player is too fast and that there is no accelleration time)
Also, i'd have really liked to see the ico mechanic used a little bit more :/
Other than that, it's a really cool game, it was a ton of fun, and i really like the neon ambientation of the game!! Good Job!! (^u^)
(SPOLER: End Parkour Skip)