This is a list I'm thinking of using just for fun at a local GW.

Hq:
3x Tyranid Warriors
ES, TS, EC
3x Scy-tal, 2x Death Spitter, 1x VC
118pts

Elite:
3x Tyranid Warriors
AG I&WS, TS, EC, leaping
4x Scy-tal, 4x RC
172pts

Troops:
17 Gaunts
Spinefist
85pts

17 Gaunts
Spinefist
85pts

16 Gaunts
Spinefist
80pts

Heavy Support
Carnifex
ES, +1 wound, BS, VC
153pts

Carnifex
ES, +1 wound, BS, VC
153pts

Carnifex
AG I&WS, +1 wound, TM, +1 toughness
2x Scy-tals
152pts

The warriors and guants are there to make it semi-swarmish, the two sniper fexes are for tanks, and the CC fex is just because I got a already built CC fex for pre-ordering some washes.

Anyways, the strategy is simple. Take out tanks with the sniperfexes, and charge up everything else while trying to make sure my warriors don't die. The sniper fexes will also march up as they can support the gaunts in CC if they have to.