The main problem with helena is the continous plants popping up. This prevents the single crit hits from hitting helena resulting in opness of helena. I had seen during one fight where one warrior taunted all the plants and there were two more rouges along with me. The rouges killed helena like silly hillybilly.The fact that ursoth is easier is because of this. For helena if number of popped plants is reduced I.think it would do much better.