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I have now played against Death Wings twice. Both times 1000 points and I have had a fairly "general" army since it was sort of randomized which opponent to play against.
Problem is that when 17 Terminators carrying 6 Assault Cannons is bearing down on my poor innocent bugs they're getting shredded. Nothing I can do really prevents the fact that I am wastly outgunned and the 2+/5+ saves are killing me... I hit him alright but if I just look at the last game only two Termies went down to shooting (I had 32 Termagaunts, 6 VC/Devourer warriors, 2xWarpBlast and a Dakkafex). The 6 others I managed to down, at last, was thanks to my Genestealers...
Problem is that for every round of shooting he almost wipes an entire brood of gaunts (16 gaunts).
Any good ideas or armylists that should be good against Terminators?
I suggest full squads of Guants with Without Number.
The best way to defeat Deathwing is to outnumber them.
That's all there is to it.
1) a winged tyrant
5) ripper swarms w/leaping
With the right terrain setup, you should have no trouble getting into close combat in round 2.
You should seriously consider taking anything that denies him an armour save. Brood Lord, flying CC Tyrant, Leaping Rending Warriors, and max out on the cheapest gaunts you can get (Spines). Don't use Hormagaunts or anything like that, they're too expensive and will just get shredded. Take broods of 32 spinegaunts and just mire him in cheap tar-pits while you pick his more vulnerable units apart. Then, when the Terminators seem about to break out, hit them with Stealers or a Brood Lord.
Don't try to outshoot massed Terminators. Tyranids don't have enough AP2 to try (Necrons have the same problem). You want to take 'em down in a way that denies them a save. If he's taking assault termies, blast 'em with powered Warp Blasts to lessen their numbers, then eat 'em with Genestealers.
Going to rethink the list and make sure to have a more tailored list next time I meet him. Getting into close combat seems to be the thing since I actually dropped most of them that way. Just hate that he had 1 power weapon and 5 powerfists per squad. Made a mush out of my rippers... Well, shall play around a bit with Army Builder and see what I can fit into 1000 p. :-)
EDIT: also, because of the ridiculous amount of powerfists he's packing I would take either a Broodlord or some leaping warriors for my HQ, NOT a tyrant. And I agree that shooty units are not going to be able to compete with his 500 ass cannons.
Tyranids: 2500 pts
Imperial Guard: 1000 pts
Witch Hunters: 1000 pts
I found when I fought the Deathwing that they were vunerable to small individual units. This is because they themselves have limited numbers and can only send their firepower in a select few directions. You can use individual Raveners or Zoanthropes as an annoying distraction. Because they have limited power on their own he won't really want to waste a Terminator squad's firepower on one of them.
Best to sneak around with them and then jump on him later.