Wow, I have so many feelings about this game. At times it was fun, and at times frustrating. I don't know exactly what it is but ultimately I left the game feeling frustrated. It took me a while to figure out that the big purple thing was a level select screen. The levels are cool but some are really frustrating. I'm not a fan of the mouse grappling hook, I find it a chore to use. Sound effects when Jumping and using the grappling hook could be louder. I didn't finish. I dropped out somewhere in the Centrifuge room around 45min playing. The room with the two platforms moving and you have to change gravity between them.
The game on the whole is a vast improvement from when I last played it. About 4-5 jams ago. Keep up the good work. I didn't pay attention to the story much but it seems to work ok.
Suggestion... add a death counter, I found myself wanting to know how many times I died. Add it to the pause menu or something. It's not essential.