The concept and idea for this one is outstanding! (i kept either going up way too soon or dying because it was too late to go up after noticing that I was flashing :/)
Thank you for playing and for your feedback! I hope it was not too frustrating ^^ there is also a bug when you retry multiple times, the max oxygen counter does not reset so it might be even harder to estimate how much time you have left. I'll fix it after the jam probably ^^