Defeat Mission 87 without killing a single unit.
Wiki provides decks, but if you don't have enough harbor commands (eva deck which I didn't get to try), the first deck on offer doesn't work, sadly.
Thanks to Tyrant's Club, Msbutterworth, (s)he has offered 2 decks to try for this achievement. It's all about putting in fear units.
Deck I used: Eva, Sneaky Brute, Tactical Infiltrator x 2, Mortar Bunker, 2 x Harbor Command, 2 x Pandemic.
MsButterworth: Eva, Tactical Infiltrator, Sneaky Brute, 2 Pandemic, 2 Harbor Command
Agroagro: Xaedan 2x xenos singularis, 3x shiver, 1x pathrazer 1x destruction, 1x fullpower, 2x spectre
Good luck!