If I understand you -
you are attempting to pass the three Revelation trials.
You don't say what class you are.
There are two pinned threads at the top of this forum.
The first one - chain Sarn is easy enough.
The second one - run around and collect the orbs.
>>My suggestion - focus on getting blue orbs until you have both the crystal shield and the second shield.
>>Run, run, run
>>Use one shield, then when it runs out, raise the other one
>>Use the leap if both shields are on cooldown
The third one -
>>If you have invisibility (Scout's Vanish, or invisibility potion), or imitate death, or animal trinket (<<I haven't tested this) use that if you can't kill the dogs
>>When the worms appear, run, run, run
>>Use the shield when your health gets to 50%
>>Use any class sprint or healing abilities in between
>>Keep doing this until the Yellow mobs appear around the edge, then use a Greater Potion of Speed (buy from the auction house)
I used these strategies and did the pre-trials easily enough
if you are still getting hit too hard, grind for gold in Kingdom of Elements and buy the overpriced Green gear from the Auction house the best you can, then try again