Im trying to get the game but I see no option to buy it in anyway

I am trying to beat the highest level of the Annex collection and the last platform requires a tight slide jump to complete. I can do a slide jump if I have time to run and I can mostly get horizontal distance and not much vertical distance. When I try to just slide and jump quickly I end up doing a weird half jump. What am I doing wrong?...

Thanks for game btw. But unify 5 has a glitch on second path first zip doesnt working. Ive tried everything but the character is always falling. Can you fix it devs? Thanks

At the start of the level, after the jump boost, there are 3 platforms in diferent heights, the first 2 are ok, but from the second to the third I can't reach it, double jump, the Q boost, i can't find what I'm doing wrong. Can someone indicate how to do the jump?...

Im trying to shift+W+A+space but I cant speed boost to the other wall.