This is the strategy I used with my Defender lvl 30. I also show all the equipment so you can try it too. Blinding bubble seems to rule this raid. The thing is as simple as controlling the enemies, ignoring the witch and blinding the ogres in order to stop them from shooting (and owning) you. Simple yet not that easy. And there is a moment when the totems turn red, if you get too far from them this happens and they might kill you so you have to retreat and stay as close to them as possible. BTW there seems to be another jump ability, the first one, which can be used to jump higher instead of further. I also tried that one after the video and it seems to be more useful and easier to cross the bridge.