Tiaral

Only two or three.

Two little kittens. Two of your brutes. A Дейций terminator from me (of course, I can also create an Эйхор mage, but for now, I'm leaning towards the terminator). Considering the UNCERTAINTY regarding one of the kittens, that makes 4-5 melee units. And then there's the terminator archer, Ment, who will tank most of them.

Added 4 minutes later

after everyone has taken their luck, I'm almost embarrassed to take it too...

Go ahead and take it, then we'll definitely be lucky and succeed. I, for this very reason (yes, exactly for this reason), will probably make the tactic one-eyed. Then the chance of survival will be 100%. Unless, on Tiaral, luck doesn't favor the one-eyed.