Having expected something like this, Pete jumps backwards, away from the approaching tentacles, squeezing off a shot that explodes on impact, turning quite a bit of tentacle into disgusting goop.

"Huh. Forgot I had it set to explosives."

It would have made a pretty good set of last words, if anyone in the Cancerverse could speak last words. No sooner is the comment of Peter's mouth than another set of tentacles behind him ensnare his legs and slam him prone. They snake upwards, wrapping around his arms and squeezing until there's the sound of cracking bone and a hissed oath as his pistol falls from a badly fractured hand.