Completed in 30 seconds! I really like how easy it was for me to understand. Went in without reading the desc and still understood what to do in 5 seconds. My only nitpick is that I wish the oxygen timer was a bit more lenient in the beginning, since we don't know where the tanks are until we see at the corner of the screen with 1 second left on the tank, haha. When I came out of the water to see the win screen, I was so relieved XD.