Warhammer 40000 Space Marine
59 Achievements
1,235
40-50h
Devastation!
Have 10 times more kills than deaths in a single game of Annihilation.
25
How to unlock the Devastation! achievement in Warhammer 40000 Space Marine - Definitive Guide
Set the match's required kills to whatever you like (I believe the minimum is 20) and kill your friend until the limit is reached. Then return the favor in another private annihilation match.
Enjoy.
For Annihilation, it simply is the Team Deathmatch mode. You must end the game with a 10:1 ratio. Meaning, most of the time if you're playing legit, you can only die once.
If you prefer to boost the trophy, simply make an Annihilation private game and set the Score Limit to 20. Let the person who is supposed to win get the 20 kills. This should pop.
Or if you prefer to do it legit, I'd suggest using a Tactical Marine and use the Stalker Bolter/Daemon Eye Bolter and sit back and attempt to snipe people. InfiniteStates suggest doing the Havok marine with a Plasma Cannon with some perks, it makes it easier (or a Lascannon).
Annihilation is the Team Deathmatch mode of Space Marine, and it requires 41 kills to win. This achievement require you to get at least quarter of the teams kill and very few deaths.
The ratio for this achievement goes like this:
10 Kills - 1 death
20 Kills - 2 deaths
30 Kills - 3 deaths
40 kills - 4 deaths
5 or more deaths = Try Again
As you can see, the more you die, the more impossible this achievement becomes.
My suggestion for this achievement is to use the Tactial Marine/Chaos Marine once you're around level 18. Once there, pick the perk that allows you to take more than one primary weapon and take the Stalker/Daemon Eye Bolter (the sniper rifle) and the Meltagun and any other perk of your choice. If you have 50 kills with the Stalker/Daemon Eye I suggest taking the ammo reserves perk to bring another 20 bullets to the fight.
Now, on any level take whatever high ground you can find and try to pop off head shots. If you find someone closing the distance on you try to hit them once more, then swap to the Meltagun get as close as possible before blasting the guy who is trying to kill you. If done right, the melta should kill the guy in one shot and net you another kill. The only danger in this method is that you might run out of ammo for the sniper.