Asylum managed to complete the dreaded tree twins on T2 this evening.
Did not get challenge as it took us 4 waves.
Technically, 4.5 as the second tree fell and we got completion but he still had 1k morale and spawned another 3 adds. So we killed those adds and the tree again.
Next task is to up the dps and get it done in 3 waves to complete the challenge. Great job everyone!