Warriors ? They get pwned with T2 ASM or T1 ASM with help of any hero or tacs, also T2 tacs with plasma guns pwn Warriors with VC, since only one of them actually shoots, for a aproximately 100 or more hp damage each shot (with quite a big cooldown between) while all of the tacs shoot for decent dmg.
The real problem is barbed strangler (yes the GREEN GUN you b00n - insta suppression) and ranged/melee synapse benefits to terma/horma gaunts.
Also reapers get pwned by flamers and all AOE weapons.
And carnifex can be dealt with, by both some of the AV and AI weapons.
Concetrate your forces and focus fire on warriors instead of gaunts, and just avoid that incredibely slow Hive Tyrant (for me Ravener is the real deal, he's far more annoying).
After such a quick skirmish run to your req/vp points, since after retreating a lost battle, nid player will surely spread his forces and go for your points.