He isn't useless, you are very weak if you're wading through the marsh land anyway. You should be going for the high ground advantage, plus in the water there are like a million traps.
Yeah he is pretty useless. I took out both Wood Woads and 1/2 the Mud Mephits with just my rogue perched up on the hill right next to that tree; so yes I understand how high ground works. To get Astarion there would be a huge pain and so I basically had him sit out the entire fight.
Edit: and yes if you stay on the gangway you avoid the traps. I am familiar with that area and you just made an assumption that I just wandered through the mud there. If you watch the video you can see he actually takes damage on the gangway a few feet away from the water. Even if he is sensitive to water, my point still holds that it's not visually accurate. I'm standing on dry wood (at least based on what I'm seeing there) but I'm still taking damage?
