Nice game!
Simple visuals, but it fits the game well.

The controls felt nice, and I liked the idea of buying upgrades when dying from a spike.Consider adding some background music to add a bit of atmosphere to your game.

Great job!

Very nice game, controls need a bit more work, but overall it's a really good game.

Simple and fun, I'd love to see more levels of this with different upgrades. Maybe an upgrade that allows you to wall jump.

nice simple concept

Simple and fun. Love impaling myself for upgrades lol. Great job!

Nice little game ;)

Hey :D nice Game

This was a fun game! Simple, and I liked the basic platforming, a lot of room for interesting levels and buying decisions in future levels if you decide to develop it more. Good entry :)

Here's a quick lil playthrough:

Cute short game. Like people already said here - it would feel better to keep the upgrades.

Also, some coyote time for the jumping will make the jump feel better. 
Having to click with the mouse everytime you die is annoying, just get me back to the game.

Other than that, well executed.

Good job!

It's interesting that the death help to upgrade but i wished my upgrade stay in next level. ;) With more polish, you  will do a nice little platformer game.

Nice game

Nice little game :)

The idea is very original. It could be extended in a lot of ways, like having different mechanics to choose from and having different ways to solve a puzzle.

Overall a nice idea and a fun game!

Good Job!

Played on Stream. The jump felt very well executed. I enjoyed the upgrade system. It could have benefited from some additional variety but this being a jam that is understandable. Nice job :)

Very Nice,i liked the concept quite a lot. The graphics tho look a bit plane
i would recommend using a palette generator and picking colours from there
Would make the game look sooo much better
Good job!

Was really fun, the code looks like a lot of work. interesting programming language :D

Enjoyable little game. Dying as a means to get upgrades is a cool little concept!

Really cool idea, death gives you points to get abilities!  Simple but cool!

The platforming also felt quite simple and nice. Really enjoyed it :)

Pls also consider playing and rating my game if you get the chance.