Does battleship need a skillbook?

Look at my post:

This is what happened

- 4 minutes on clock
- Right away, Kyrin hit me with a super weapon def [all physical attacks do 1]
- I get 1/1
- I have to literally hug wall and avoid canon/torpedo to save pots as each hit = 1 pot

I did attack it some, but maybe 13~15k total each triple fire and it has 60m+ hp? Idk how super xformed kyrin works, but the battleship one is pretty much impossible.

It's 100m HP. Pretty sure it's a combo of demo and shockwave too. Boss invincibility frames ftw?