The RNG in this game really kills it at points, having a great run get ruined by two turns of bad rolls that literally half your population completely ruins this game for me
From the start when you are dropped in the water, if you go up/left and try to go down through the tip of the rock you can fall through and glitch into the darkness. With max fuel and rotor you can reach 7000 depth easily going directly down. This also works to the right as long as you stay on the top of the water. You may get lucky and not take damage however you will likely need a strong hull to pull this off.
To beat the boss:
1. Be on the 2x1 plateform
2. Press c (rocket boost) then z (jump) to get onto the second platform
3. Wait for boss to go past
4. Run through 2 green doors
5. Go up stairs and get upgrade
6. Go down stairs and shoot boss he cant actually hit you if you dont go into his room or the doorway into his room.
5/6 can be flipped but I'd suggest getting the faster shooter first to waste less time.
Also, this gets harder and harder as you shoot the boss so I'd suggest doing this soon as you get into his room