wracks army

My army was build with
10 wracks and a H. 4 liquifire guns and 2 schisorhands and a portal x2
1 Monsterus creatures to make special formation
2venoms with 10 wracks with 3liquifire and 1osifactor
5wracks and H. 2scisorhands x2 portalx2
it came to 1500pts

I have 2 formations from the Haemonculus Covens book
Scarlet Epicureans Scalpel Squadron
and a normal formation with 2wracks as E and 3H.as HQ

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It is a fun army just don't have anything against flyers, vehicles,
am I missing something, I normally build army for aesthetic pleasure of painting it but also don't mind having a chance in match, I find that this army has a lot of potential
but it has more drawbacks

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to fix it I was thinking to put in 2 more venoms as I find them very effective
and there is also a chance of putting in archon with 10 warriors as archon can be a solution to fighting dreadnoughts with A13

your thoughts ???

id say throw in a talos or two, they look awesome and are great anti-tank for a pure coven.

I'd say archon is not a solution against AV13, and not with warriors, their rifles do not even harm them.
The DE solution for AV13 are blasters, dark lances and HWB. Moreover you do not have any AT, except for the talos, but never throw 'em against a walker, especially a BA AV13 dreddy, it will smash them. They can perform well as AT with HWB or against AV10 on rear.
I play kabal, so maybe don't know very well the coven part, but I think Urien should perform well, and grots also, and a cronos (maybe in the talos/cronos/haemi formation with a WWP) to boost FNP.
I would play ossifactor on the wracks, and leave liquifire to grots as any of them can get one, and they are worth on goin on assault.

I'm beginner, but I think Coven beign tougher than DE maybe for flyers you can ignore them most of the time and go the the objectives and the ground units. But you need something against vehicles, they are a lot more common.

With a coven-only force you can still use raiders, it will get you a few lances against vehicles. But it wont be enough.

As Slaanesh said Talos can open vehicles. I tried Dark Artisans with a wwp, and they wrecked 2 annihilation barges easily.

Use the formation with 5 Scouting Talos, bring HWB for anyone, and then put 1 Cronos behind theme.
In a Coven Army, this is one answer at walkers

I would say leave the liquifiers at home. I can't think of any situation you would need one, or would need one enough that you would pay a blaster for, or nearly half a grotesque even!