Whooops!! Forgot to disable the shader parameters that we were tweaking ingame! (that 'E') was meant to be part of the gameover screen but didn't got in time! The "space" reset is also totally my fault, forgot to disable that quick restart.
Will update with those things once voting is over! Thanks for letting me know!!
And yeah, (it says on the game's page) it can be only played with a controller for now!! Sorry!!