Move with WASD or the Arrow Keys. Jump with Left Click or SPACE.

You can wall jump by pressing jump repeatedly while on a wall.

Your movement is limited by the length of your oxygen tube. Find the next gas tank to keep moving forward. You can also use the tube physics to swing yourself into hard-to-reach spaces.

To double jump, jump into a bubble, then press SPACE to jump again. 

For an extra deep challenge, try to collect all the diamonds!