Keep Breathing!!!

• Q - Breathe in 
• A  - Breathe out
• W - BCD inflate
• S - BCS deflate
• Up - Swim Forward
• Down - Swim Backward
• Left - Rotate Left
• Right - Rotate Right
• Space - Flip Orientation

Keep breathing to maintain blood O2. Air consumption is increased with depth, keep breathing on asccent to prevent lung overexpansion and death.

Game Over: 

• Lungs overexpanded
• Body runs out of oxygen (if you forget to breathe or run out of air