Impressive! I didn't think that you could actually take over the map.

I was wondering if that was possible. I'm going to have to do it now. I've been looking for a way to squeeze some more challenge out of the game after managing to beat all the campaign missions with 0 casualties and no shop stuff.

That should actually be an achievement btw ;).

I'm actually very impressed with a "no casualties" win on Memento Mori -- that's one that I wouldn't expect to be possible.

Took several attempts and it was easilly the hardest mission in the game for that goal, but yeah, it's possible. Basically, fight delaying actions just long enough to get the bp drops and fall back. The officer is pretty mandatory for the squad move speed factor. If you get poisioned without him you can't disengage and somebody will likely die. The place to stand and fight the longest is at the preplaced shield generator. Use raids on hives to capture bp crates between swarm counter attacks and retreat back to the forcefield to weather the storm. Going for automated construction at the start and using minefields is very helpful. By the time you're forced to retreat from the force field area you should idealy have enough bp to recycle almost everything and build 2/3 siege guns, a couple of mortars, and assorted other defences at the last bunker and that will hold.

Nice work. I did that without buffs. Trick is to repeatedly let them capture a point when they have high energy, then immediately recapture for 3 points.

Also I can't get get buffs for this mission. I can purchase in the shop before but if I start this mission I just get riflemen anyway.

Same, I hate running away like this. I cleared the map like you did.
It was on Normal, no single-battle power-ups bought.

Limitations:
Wasn't able to keep the general alive - you can have him survive longer by building the healing facility (almost always build it, it's amazing).
Wiped out the aliens completely several times, but the last push was too much to clean before time ran out,

Strategy for anyone interested:
The strategy is easy (This stage is easy too, I actually never lost in it, but I might just have been lucky)
-Buy 1 Officer, and 1 Minigun. Use them to mow down alien bunkers (that's all it takes!).
-Build a healing facility.
-Build (+relocate) all essential facilities at the south (use a flag and normal soldier, then sell him and relocate flag)
-Buy another minigun, then buy the rest of the facilities. Then buy more miniguns, and maybe Flak Cannons for the lolz.
*At the last minute you'd have 4-5 miniguns, an officer, and 1-2 flak cannons.
*If you let the aliens take over a couple of your bunkers, you'd have a few more BP to invest. But it's not mandatory. Just do it once at the start to have an easy going.

Why no image-proof?
I'm actually not that smart, it seems. I used screen-shots and MS-Paint to save it all, but now I see that Steam has its own image storage system. Will share images if anyone would kindly reveal to me how to post external images to a Steam thread.

Wait... You're suppose to lose...?

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-Nods head and quietly walks away...-