Ok, I'm on the 7th level of Djzeear's 10-level campaign, and I can't fucking win! Within a couple of paydays, a wave of 3 level 9 swarm on my position every half payday. Naturally, since my creatures are shit at this stage, they get wiped out.
How the fuck am I supposed to win this?
ETA: I amended the level script to reduce the swarm strength to level 6, just so I can win this.