I did left side solo as a hunter, on the final layer the eye boss absolutely decimated my pet even when I interrupted whenever I could and used mend pet/exhilaration. I managed to do it but I had to ress my pet 2-3 times, which was sort of a pain with the longer cast time. I did the other side with two friends and the trash was a slog but the final boss melted in like 30 seconds. As a hunter it feels like you can get a lot of useless powers.