Did this as MNK at 40 - really don't understand the complaint. It took 2 attempts, but that doesn't make it difficult. I don't even recall following any kind of strategy beyond 'kill whatever'. Maybe you're just undergeared/bad? If so, die to it a couple of times - that'll turn on the echo, which stacks - so if you keep dying you'll end up with a massive stat bonus to make up for your abilities.