In no way was that Shar trial even close to difficult to see. Are you not hiding as you move in a room that's marked dangerous? Are you not showing enemy sight lines as you walk around enemy camps? It's almost impossible to get ambushed in this game. You can actually look ahead and see things in line of sight. I don't think I have ever been ambushed outside of clicking something and it spawning mobs on top of us and those encounters aren't that hard. Use the tools at your disposal and these impossible fights you talk about don't exist.