Guild Wars 2

I’m at Lornar’s Pass (False lake) fighting pirates. I got torment for 2 stacks, and then the pirate died. When he was dead though, my torment stack increased to 3 and 4, before decreasing again. I wonder why this is? I’ve tried looking it up but I didn’t find anything of use.

Mas

The pirate used Impale . Which will apply torment stacks until the debuff is gone. Not sure if the pirates ever use Rip