Probably has a Mod that has squids...

It's underwater, so it must have squids. Also crab squids. *VOMMITS*

Acheive your dreams and go around beating heratics with a tentacle bat!!!!!

There were those squid enemies. And also the super hard mega squid boss. OOOOOOO!!!!

In Treasure Knights level, there are tentacle enemies that try to go all hentai on yo ass.

The game squid shoot ink at your enemies. Also most things in this game have tentacles. Gross, gross tentacles.

You play as a dad that is secretly an octopus, but then, that octopus is secretly a squid. OOOH EEEE OOOH!

Mind flayers look like squids and they also suck your brains out. Thats ♥♥♥♥♥♥♥ metal as ♥♥♥♥ dude!

Some of the enemies have squid faces. The downside is that you murder them, but then you can play as them in multiplayer, so its chill.

There is a squid named Onionsan, and he isn't killed in any route. Also spaghetti, and spaghetti is kinda like tentacles.