Enter the sideways pipe sideways. You know you want to. Post bugs and/or ideas to add.
Wall latch - While falling, grasp a wall to slowly decelerate, and lead into a wallrun.
Wall run - If you're not falling, when you grasp a wall, you will begin to run up it. ((Yes, I know if you're large Mario your sprite enters the wall))
Wall jump - While running on a wall, you can jump off of it.
Slow-Motion - While the middle mouse button is held, everything will run in slow-motion.
Daft Slide - Can you feel the daft in the air? You can slide upon it by jumping in mid-air with a side held.
Homing Strike - Amidst a daft slide, hold down to do a homing strike. Be sure to aim your portal gun at the target.
Roll - While on the ground, hold down and press a horizontal key to take off at high speeds.
+Wall jumps during wall latch (they depreciate as your downward velocity increases)
+When you hit the middle mouse button, you will go into slow-motion.
=Wall latches are quicker to decelerate your motion.