Advice vs Gargantuan Squiggoths

[WarheroJango]

I have an Ork foe pinned between two Chaos armies composed mostly of Landraiders and helltalons but I can't finish them off due to the narrow straights which have kept me alive for most of the early to late game. (VH Game)

But they have 4-5 Squiggoths and the few Defilers I have just don't seem to compare in melee combat whenever I try to push in on their city and shooting them at ranged is a painfully slow process.

[Jey]

Send heldrakes. They can't be killed by squiggoths. Slow, but it works.
Can you send the defilers the long way around them?

[WarheroJango]

I can but they just run into another literal line of Squiggoths.

The only way I could force them out is by filling every other hex with Heldrakes, because even a small force gets netted by their AA guns and get shot down due to not being able to fly out for repairs.

They're just too strong behind city walls.

[WarheroJango]

Nevermind about those Orks because I just peaked at the map after Surrendering....

A huge IG force is approaching from the West. Their gear will dig out the orks easier than mine can.

[Corseth]

If they have such a huge defending force in such a small space, and are protected by incredibly narrow approaches, but you control the rest of the map you'd probably be better off going for a quest win than trying to grind through that, or backing off and trying to lure them out past the chokepoint where you can engage them with a bigger army instead. You've got a situation that benefits the defenders to an absurdly massive degree - I don't think it's a Squiggoth problem per se, put 4-5 of any of the end-game units in a city with a chokepoint like you describe and it'd be incredibly hard to break though.

[WarheroJango]

Its impossible. I'd need something like guard flyers and artillery to flush em out.

Chaos just doesn't have the Super heavy units to cut them out.

[chuftka]

I didn't know there was a quest win, never finished one. Maybe that is the answer to playing SM on large maps - just try to hold on and finish the quests. Of course I don't know all the steps since I haven't finished it.