Left/Right Arrow - Move left/right
Up Arrow - Jump
Down Arrow - Duck
Left/Right Arrow + Up Arrow - Wall climb
Tab - Slow motion
This game is currently in Beta since there are issues with container entities in the game engine that prevent the level editor from working, and a general lack of content to play with. Expect to see a full version in the coming days. Until then, there are only five levels, two of them tutorial levels.
ProgressPlatformer has been completely rewritten to run on top of ProgressEngine, a game engine designed to support games such as this one. It is currently available as a part of the ProgressPlatformer package, but in the future it will be released separately.
Edit: Rewrote post for the new version, Achromatic.