Haha, nice one !
The multiple jump is a relic of the early prototype of this game. It was meant to be an endless vertical scroller and I figured out that not all the code should be thrown out the window and some things could've been fun for some players to figure out on their own (I also used this strat to playtest lol). Some other code like a 10% speed boost for each ledge you grabbed before hitting the ground and different frictions for each type of ground did not make it though :(
Anyway, I'll be sure to check out your entry as well ;)