It's fun, but the game is a little bit finicky. For instance, the spikes and blades seem to have bigger hitboxes than they should, and often times after I die the new spawn would immediately run into a spike as I was holding a key, which was a little annoying. Other than that, I feel the only thing missing is other levels. Good work!

Nice execution, alhough i have few ideas to make it better:
- make more precise hitboxes
- sometimes 'space' doesn't work and you cannot sacrafice
- controls feel too floaty - you are steering it with physics so add more drag to rigidbody
- it would be nice if you save score - how many sacrifices you had to make to finish level (kinda like in meatboy)
- you cannot jump on skew surfaces - probably detecting if isOnGround isn't registering sew surfaces
- level design is off - you should use more idea that you can sacrifice yourself
- there is no quit button so you have to ALT+F4 yourself from the game...

Overall great entry like for your first jam, and it was actually fun to play - i wonder how good/bad it would feel on mobile - game is designed for mobile although there is no mobile build!

It's good. The most important thing you should improve is movement. There were also few minor bugs, but other than that, there is a potential.

Fun concept, it seems like the sort of thing that could be well suited for mobile. If you want to take it further, adding more levels with a limited number of "sacrifices" per level could be interesting. Nicely done! :)