i try to never beach on a swamp as you aggro everything in like a 2km radius lol, troll armour is great for sneaking and agilty but you gotta be real good with it i use bronze it can take a beating and i'm not in it for the sneak, can't say i really bothered with troll armor, though i hear you can skip a lot with it, but ya gotta be on the money with parry etc, no parry with the tower shields.

if ya have to go to that island i'd stay in the boat and try to pick a few off with a bow from a distance, before trying to land, reduce the numbers, if it gets hairy sail to the black forest and let em come to you?