GC Leves

Are there any Lv20 gc leves that are easy and hard (my character is with Maelstrom)?
One Twin Adder leve was pretty easy, whereas the Maelstrom leve took about 4 attempts to do. Both leves mentioned were equal to the Pugilist skill the character is on, properly equipped.

I think all the GC leves are pretty easy. Been doing a ton of them to try to get the achievement.