Nice game! Here's my initial impressions and feedback.
The grappling hook feels good.
The meter feels like it's lacking a passive recharge mechanic when running on flat ground. I know when you go fast that would be mostly irrelevant but still. I jumped in place in the tutorial to recharge the meter, I thought I had to do that because the it was bugged.
I like the skybox and water a lot.
Might be my monitor settings but red boxes don't always look red because of their dark shadows. It's not clear whether they're going to kill you or they're normal boxes.
I understand it's needed for gameplay reasons but the way the objective marker is drawn on-top doesn't look great. Maybe with s compass along with a tall in-world light beam could do the trick.
Please add a FOV slider.
The repeating textures don't look great.
I like the yellow grind bars, they feel good to jump on.
The game is fun when the level design clicks.
Some checkpoints are very hard to recover from after you die like 2/7 and 4/7 in the 2-2 level.
The right click dash feels weird when it's used on the floor to gather speed, sometimes you lose momentum very fast after using it, sometimes you don't. Maybe it's because of the surface type?
Having both an air dash and a grappling hook feels redundant.
Looking forward to see your progress on this game!