Guild Wars 2

i tried but the big champion summoned before i killed them all, and then afterward continued to spawn new undead, even after killing the champion
and after i killed the champion, i left god mode and couldn’t defeat the rest

while playing through the story i gained the power of balthazar and made bloody havoc and all sorts of fun thing. afterwards, i was told to make a decision on how but found it difficult to make since all of the mobs were still spawning, killing gixx and theotherguywho’snameican’tspell
even after i made my decision, the story still told me i had to “gain power through my enemies demise” and wouldn’t let me leave the instance.
after logging off and back on to exit the instance, the story did not advance, and have to redo it

yeah I’ve redone the story about 3 or 4 times with the trebuchet being bugged, thanks for the info