It's a bit difficult to explain quickly and easily, but the short of it is; colliding blocks are basically replaced with pictures. Pictures take up less computer power points (I'm being dumb and can't remember the right word for it. Ram, memory, processing power? Whatever. Power points sounds cooler).
The only down side to this is I have to re-do a lot of stuff.
Something else I was able to add was the ability to move faster when going down hills, and slower when going up them! This will make the player want to spend as much time on the down hills while trying to jump over the up hills (as your speed doesn't change while in air).
Things are looking nice so far.