Lovers in a Dangerous Spacetime

Story related, cannot be missed.

Cetus is actually a boss fight where it's really easy to die. He only has a few attacks but one of them are deadly. You are stuck on a rotation loop around a water globe so keep in mind that you don't need to do any movement at all (besides avoiding tsunami.)

His attacks are as follows: Yellow mines that stay where he places them, Vomit attack that spawns two bubbles and when popped spawn 4 additional baby versions of him. He tries to bite you sometimes. His main attack is a Tsunami that he does by rotating inside his water orb; first a small wave and then a bigger one and if it hits you it will shoot you straight into the asteroid belt. Keep shooting his weak spots that are red and you win!