I, @Sean_Sperry and a few others are working on a way to beat Mortem. So far we’ve managed to beat the first round consistently (70% of the time), and do a little bit of damage on the second.
There’s 3 main strategies, but the central creatures are a Tuoramoloch (acceleration and healing), Maxima (Greater Thagomizer to take out the minions before they attack) and an Erlikospyx (Distraction).
The third creature choice we’ve tried is Tryostronix, since Maxima needs a little help with the minions, but our Speedsters need some more health for any chance at beating Mortem round 2.
The strats we want to try are using a Tenontorex in place of Tryo (can help Maxima take out minions, can help bring Mortem’s damage to zero and heal) and Dilorach in place of Tryo (same as Tenrex, but we considered this because Tenrex has to be slower than Maxima for the former strategy to work, and our Maxima isn’t speed-boosted).
The only problem with these strategies is that due to the loss of Tryo our damage output decreases, so we don’t know how much of an effect that will have.
If you want to help, you’re welcome.
So far we’ve beat Mortem round 1 with 22 Tuora, 23 Spyx, 23 Tryo (boosted slightly) and 26 Maxima (max boosted).