The thing I noticed that campaign plays just random.
On one run they'll use no defense and later switch to missles defense.

On another run, they switch to shield, when game is basicly over (yes, that unwinnable). On 3rd run, they'll swtich to some other defense, etc...

So try several times, until AI doesn't make shield ships.
Then use turtling.
Starbase with beam boosts, bunch of tiny ships. Defend, then move forward after you get all solidering (3000pop invasion transport is good to take any DL wolrd). Build new base, move forward, etc...

If DL gets shields, it's game over in this mission.


P.S.
The good thing, in next DL mission after this, you'll have access to all types of weapons, so there will be chance to adapt if DL get shields.

But, in this mission that sucks.

From the positive side, this mission is not mandatory. If you loose you'll have backup mission to fight against Yor, which will in result give you access to all weapon tech types after you win (basicly the thing you lost to do at Teth).

Yeah ignore Defences, go for attack and stick to ship sizes that you can make bigger fleets out of. I personally use small hulls because I dont use Mil starbase anymore and need the space for more speed and more weapons. Climb the laser tech tree to phasors on this level and you can really stick it to them. Trade techs with your allies to keep up with the useful techs you will be ignoring. Build the fast interceptors to protect your allies colonies.

If you see shields on the Dreads you are boned. Well, your attacks are boned. If you didnt expand too far and your allies have a good foothold, they dont seem to be slowed down by the ridiculous defence.

Buy things outright with your big wad of cash. And if you dont expand very far either for some reason your allies can go toe-to-toe with the Dreads using fleets of 2 ships with a total of 6 dmg.

Yip, I dont understand it at all since my fleets are generally superior to that and have more ships in but will only whittle Dreads down in hp a little at a time. Then not at all once shields appear. I dont mind though since without this "gift from their gods" we would all be boned.

As a guide, the Torians completed this level for me the last time I played it on v1.11 !!

This is 5th, mission, not Sige.
There is no Yor around.

To complete Achilees Heel you need to take out DL.
There is no other way around.

Exempt if you give up and play backup mission against Yor (no DL around).

I've heard some say they do a bum rush on the DL planet, but I've never been able to get things going in time to do this on this mission (kinda managed it on Siege).

Basically, don't put the difficulty low, as it's hurting you more than the DLs. Your allies help a lot when they're smarter.

I had to try this mission a couple times, but I did the turtling approach with starbases and large fleets of fighters (logistics and minitiarization help a lot vs the DL), which worked okay for awhile, but then the shielded DLs came, etc. How I got out of this was: getting missile tech from my Allies. I don't know how the Torians got it, but they did, so I researched up that tree, and made a couple of large fleets of missile frigates, and owned pretty much every DL fleet.

I also found that you should NOT overreach in this mission. Stay with your original two planets, and defend those. Also, get a transport killer with a bunch of engines, one laser, and maybe some sensors to drop their transports as they come in. Oh, and I went with Technologists for my victory: it helped me get the best techs quicker, etc.