having trouble with Metallic Archaea mission

[Migel]

Apparently D walker is supposed to make this mission easier, but I was under the impression of this being a stealth game, so I havent developed any rocket launchers or anything for him.
Due to most of my staff being in quarantine, and people still getting infected my R&D department isnt nearly strong enough to develop better gear now, such as heatseeking missiles. Any hot tips on what to do here? They seem to be bulletproof, and trying to bait melee attacks mostly results in me getting shot. Thanks in advance.

[lazy skunk]

https://www.youtube.com/watch?v=M3AQUbjupV4
https://www.youtube.com/watch?v=gBiz4jqcvvw

[Salok]

There's a way to beat them without using any of your weapons.

First thing you need to do is break line of sight (I use the chopper to rush it but any building can work) and then mark them from afar and go for the AA gun near the main building of the base.

Once inside just unload on as many as you can before they destroy it, you should be able to get 2 of them quickly.

If necessary, break line of sight again and go for the roof, and use the mortars.

As a last resort you can CQC parry one of the skull's melee attack in front of the Mounted MGs and use them to do lots of damage, works best when there's only one left.

[Migel]

Alright. I thought id give dwalker a go, and noticed the minigun develops instantly. (I dont get what decides how long development takes -???)
It was surprisingly easy after that. I thought he was a normal walker, but hes more of a shopping cart on a frozen lake. At least they couldnt hit me either. After two or three tries with him I managed to get 3 of them with the walker before ammo ran out, then managed to take the last one down with an LMG. Thanks for the response :)

[Salok]

Dev time is based on item's rank for the most part (only exeption is online items as far as I know)

[Maple]

I beat this mission only parrying thier melee attacks.




It took about 20~ minutes.