I really like the idea but I didn't really understand the controls. All I really knew to do was use the left and right arrow key. I see in the screenshots that the player is not always on the ground, so I'm assuming that you can climb? Also the screen refreshing is a problem and the delay on the controls is really distracting. Overall,  I say a 4/5 :)

Attention!!! You need to issue a warning about the possibility of an epileptic seizure!

The screen blinks so often that this can happen!

Your game lacks the separation of key display and key read cycles. In order for me to be counted as pressing a key, I need to hold it down. It is not comfortable. Especially considering that sometimes you have to jump and then move.

Overall, the project is good. I especially liked your idea for the game. The project matches the theme of the game jam. I liked your game!

This game is very interesting. I have never played something like this before. However, I don't if it occurs only on Linux but the game takes a while to respond  to the controls (which makes it difficult). Moreover, I think it would be better if the player were of a different color because sometimes I lose sight of it.  In general, the game is fantastic, and I love it. I didn't know that is possible to create console games with sfml, btw.