Okay, I'm going to post this because I always think, "oh I'll just post it tomorrow when it's all working":

This isn't the latest version, because the latest version is slightly in pieces. Should have it worked out tomorrow... But the engine that's behind all this behaviour is vastly different, and hopefully more powerful to allow for other creatures as well.

Click somewhere in there file to get it started. And steer a little to the left so you land on top of the hill and can "walk" around on the different surfaces. I know when you walk into the walls they act a little funny before you bounce off them, that's what's holding things up (but I'm close!). Once that's fixed, the jumping and grabbing onto walls will work again, too. It should also fix the fact that you "walk" into walls if you're falling slow enough.

Uh, yeah, so this basically just proves that you can walk. No jumping or anything remotely cool yet. Poor wall collision detection.

Once I get the wall figured out, updates / enhancements shouldn't be such a big deal, and I'll make it look a little prettier (interface-wise).