Thanks for the feedback.
One of the game’s main goals is rush, so it’s normal for the character to feel fast. The character can actually jump far enough; including the double jump, you can jump even farther if you hold the space key. I understand the blocks feeling slippery like ice. Honestly, it’s a feature I didn’t like either, but my friend wanted to keep it, so we left it that way. I think this is the only unfair part of the game; once you understand the mechanics, the rest is doable. And yes, this is a rage game.