Judging by the comments, I don't think I got 13 right. What I did was kill the wasp and get the top gem first, unlock the door just after the golem hits it, grab the earth spell, quickly fall down the spike shaft, hit the lever and then I had almost a second extra time to cross the pit before golem or slime got there.
Thank you for the suggestions. The Max Levels button doesn't need to level swapped Crusaders, since you only get Idols for the 20 Crusaders showing at reset. It is on our list of player suggestions to consider something to do with buffs for the players that don't use them.
It was a level for debugging some physics collision stuff. It shouldn't be accessible except with a special key press, but if you were able to find it another way then... oops. I'll see if I can fix it to not break after beating the debug level.
Thank you for the suggestions. The Max Levels button doesn't need to level swapped Crusaders, since you only get Idols for the 20 Crusaders showing at reset. It is on our list of player suggestions to consider something to do with buffs for the players that don't use them.