Some places felt too punishing, like a huge slope that sent you back to beginning, but since getting back up was fun for me, it is not such a horrible thing. Location feels like a testing area, with the potential to be something cooler like a temple or dungeon. No sfx.
The best part is the variety of movement. With every unlock you feel more freedom to experiment with combining dashes, wall jumps, climbs. There is a lot of room to parkour, so it is very fun to watch the character move. But there is something wrong with how the character gets locked in a place when climbing or slows down after dash. I'm still not sure after all the time what exactly is it, but maybe the animations don't match up exactly with the movement or character does not have enough momentum after performing actions, but something is keeping it from being extremly satisfying and smooth. Still, I enjoyed the challenge! Combat at this stage looks like something unneccessary, only enemies in the game were unfinished, and it did not feel fun to fight with them. If you removed attack and made that doors could be opened by collecting keys it would not affect any other parts of the game, so fighting mechanics kinda feels like a distraction from fun and challenging platforming.
Overall the game is fun, it has potential, but it just needs more polishing