Title says it all. Strat for a level 28 unboosted Diloracheirus, with a highly boosted Tuoramoloch and Mortem Rex. Diloracheirus can be a lower level if Diorajasaur has more attack.
Diorajasaur DOES need upwards of a Tier 10 health if it’s lvl 22-25, or a Tier 5 if it’s lvl 26, to survive Round 3 Turn 1.
My alliance and I just successfully completed it on our first try with a lvl 27 Diloracheirus, so I can confirm it works.