I don't know why you even let the tentacles get that close in the first place. Just FTL several hundred-thousand kilometers from said tentacle creature and open fire with beam-based weaponry and/or FTL-capable guided munitions. Repeat as needed until said creature is dead.

At least that's what I would have done.

Also, that is a terrible picture. And posting it was unnecessary considering you could have just asked Suk to change their IC post by way of a PM or a simple OOC post.