Glad you liked the game :D
The walljump was unintended and I will remove it in the post-jam version.
Spoiler (Solution for Level 3) -> Once you press the button, you have to jump in the spikes to 'respawn' ... Pressing 'resets' the level. I added the 'R to Restart' instruction just to confuse some players. The 'respawn' (not to be confused with the 'reset') mechanic is also used later in the game.
Thanks for the feedback!