that's a pretty cool idea! It doesn't run very well in browser, which made it difficult to execute stuff like midair regrabs or anything, but thats probably just unity webgl being unity webgl.

Cool idea. I love all the games with grapples in them. It plays really well.

I love how you develop this single mechanic! Great work! Also like that you made minimalistic, but readable and stylish graphics, and that music)

Love the presentation, feels like Thomas was Alone! Core mechanics work great aswell, maybe look in to another button for picking up your little buddy though, or do it automaticly? 

I like the mechanics but picking up  your companion should be more easy (maybe with an "E" key). I think it will make the game more fluid. 

Good work!

The game is fun. 

However your buddy feels a little bit more complex than a grappling hook, which detracts from the fun aspect a little (need to pick up). 

Audio maybe a bit loud, but it looks really cool! Perhaps a bit tricky to get the hang of, but very cool idea! Well done :D