CONTROLS REFRESHER:

Keyboard

WASD to move/jump. Jump again in mid-air to activate the ScaleGlider. Press 'F' to dismount.

Q/E to scale up/down. 

Gamepad

D-pad/analogue stick to move. 

A-button (or equivalent) to jump. Jump again in mid-air to activate the ScaleGlider. Press B-button (or equivalent) to dismount.

LT/RT (or equivalent) to scale up/down.