hmmmmm listen, i dont wanna be rude buutttt, its sucks, i mean, the parkour idea is amazing but....the execution sucks....sorry

the whip looks great for adding in the demo, that's a original item, and its makes that players likes way more the idea of buying it....but...jeez, the rest is another story.

first. the movement is icy for some reason, the movement on air doesn't exist, so you have to be perfectionist in a game where IS NECCESARY THE FREEKING MOVEMENT ON AIR, you have launchers pad or in this case launcher rings that THEY ARE NOT PERFECT, they are mostly buggy and that's super normal in this kind of 3d games, so yeah...movement on air complete necessary like any other parkour games. remember its suppose to feel is the player idea fails but its own, not the programmer.

second. the inertia in parkour games is necessary sometimes, BUT NOT IN EVERY ASPECT, i recommend you to play "cluster truck" and is gonna give you the idea, of how to make a proper inertia to don't turn you in a rocket on every small steps...or a snail sometimes too

thirds. you have to make a proper tutorial, or the worst part, share more content with us, we are the ones who test the game, but i notice nobody actually say something about it. it loos like the game is make it for you, and thats great that you know how to pass it, but making a game unplayable is not making it "A difficult game" believe or not, real hard games....are hard to programming. and not, your game right now is not hard, its almost unplayable and that explain the "f5 skip game content" you need more practice, that's all...the problem is get paid for a game that is not ready.

forth. the spikes...sucks but not in the way you think, the collision area suppose to be "uniform" like rectangles, circles, squares, i know make the polygons the collision area sound logical and like a good idea, but there are a lots of youtube videos explain it with not, for example, you would end up creating the idea that low-high spikes are the real passage for the next ring and thats not true, so dying a lot of times is inevitable.

you have potential any way  :D  and im serious, whipe in the demo would make it more atractive.