When I did this I took all the expansions asap. Then had three separate forces for holding the eastern, southern and western expansions (I took the top one and they left it alone all game), try not to have just one army running around all over the place. I did struggle to hold the East side and that side did buckle at the end and then everything followed after so they got up the hill so it was a darn close thing in the end. That was on an earlier Founders build so dunno if that was easier or harder than current build. First time players must find it very hard though. I enjoyed it though as the previous missions were so easy.

Don't waste any resources, I had engineers assisting my factories to pump guys out asap. I did build smarties on the hill first to defend the expansion just south of the hill and then some to the sides to hit anything getting through. Drone bays can be effective too but don't leave them on their own, gotta have troops infront of them as they are not super tough. I did have a repair bay at the southern expansion. I had less of a grip on the side expansions so don't think i put one up on those, perhaps one drone bay. Try and have 2 engineers assisting each other to build anything on the front lines, otherwise it can take too long.

Thanks it sounds like putting the Artemis on those ridges where they will not be attacked will be a lot better than putting them in an army like I did in my second attempt.

What's the easy way to kill all those aircraft assaulting my Nexus?  Lots of Apollo?  Can Smarties kill aircraft?  I can't build AA turrets while the aircraft attack because they bomb my engineers.

Need to build smarties and a few appollo, so they can hold of until you get AA guns up and running...

I see now, the Smarties can't fight on their own they need the artillery units to back them up.  The enemy brutes just tank the damage of the smarties otherwise because there are so many brutes.  Only drone bays can fight on their own and they need to be behind the lines because I think that they have low HP.

Also I noticed that there is such a thing as too many Brutes.  I thought I could just sink my extra minerals into them but once there are so many in an army that the Brutes are not all on the front line the others are wasted.  Based on the video above I need to learn how big armies need to be: not too big not too small, then I can defend more than the South and I can win.  I also noticed that Ashes of the Singularity is big on combined arms, so Archers might be important even though I am buildng Artemis.

I am doing better, I am getting to about 3/4 instead of 1/2.  Once the substrate units arrive my massive army of Zeus is less effective but I built some Drone bays and that fixed that.  I was just slow building the anti-air and got bombed out by bombers from the south.  One anti air turret is definitely not enough.