Playing through on normal.
My level 7 party is as follows
Pyro Elementalist/Healer Fighter (1h + shield) Ranger
Most fights in the game have been moderately challenging and often take more than one attempt. This one is different. I considered getting to level 8 and even things out but there isn't any experience left to get on the island.
I've tried coming in the front door (epic fail) and from the right side (after purging the shriekers).
I can make it to the worm but things continue sharply down hill at that point.
Am I missing something fundamental? Any suggestions?