Dive in head first and enjoy this chaotic underwater experience!Manage Your Oxygen: You lose oxygen over time! Enemies drop oxygen bubbles to refill your meter. Keep up with it or suffer the consequences...Enemy Drops: Speaking of enemies, they also have a chance to drop upgrades! These don't last forever, so take advantage of them while they last!Permanent Upgrades: Before you go into battle you get to choose a permanent upgrade to change how you play the game. Be careful, there are drastic downsides to each upgrade. Read carefully!