@dpumford I'm so glad you want to finish it :p That level is a bit tricky, what you need to do is jump down near the caveman on the floor, and use psychic powers in the upwards direction. You'll find a hidden block :D. If that wasn't the problem, then you need to get right next to the green door, lift the block above the button, and as it falls and pushed the button, run through the door. Goodluck!
@ JonathanG My inner peace is now shattered, knowing someone put the work into getting all the secrets, and I couldn't even put the time into making a special ending. Thanks to you though, I think I will for a post-jam version :)
And a big thanks to everyone else too, all the good feedback makes we wish I had put even more into the game during the 72 hours. Now I know for next Ludum Dare :D