Oh no, I opened the door and there was a fish!

Objective Explore all the caves to find and touch all the [NERVES] to reach the [NEST]. Unlock shortcuts, collect upgrades and consumables on your way to reach your goal before running out of Oxygen. Sacrifices may have to be made. After your inevitable [DEATH], another soldier will be awakened to carry on the mission, keeping all upgrades and shortcuts previously acquired. Leeches Avoid contact with leeches. Scare them away by shooting flares at them. Fishes Fish are cute and peaceful. When the...