This mission is deceptively challenging if you attack the undead head-on. The orange Dreadlord has extremely beefed up stats and a specialized Orb of Lightning that will proc purge with every hit, and (I believe) is able to use Inferno if he levels up. The best tactic I came up with was rescuing the closest naga base and fighting orange's units from the water until I could amass a sizable army. From there, once orange is out of the picture, the blue undead won't harass you, so you are free to stabilize and hoard resources until launching an all-out attack. The regeneration and pulverize upgrades for myrmidons will help you A LOT, I suggest prioritizing those after the attack range upgrade.
This mission is deceptively challenging if you attack the undead head-on. The orange Dreadlord has extremely beefed up stats and a specialized Orb of Lightning that will proc purge with every hit, and (I believe) is able to use Inferno if he levels up.
The best tactic I came up with was rescuing the closest naga base and fighting orange's units from the water until I could amass a sizable army. From there, once orange is out of the picture, the blue undead won't harass you, so you are free to stabilize and hoard resources until launching an all-out attack.
The regeneration and pulverize upgrades for myrmidons will help you A LOT, I suggest prioritizing those after the attack range upgrade.