Shadowrun

There seems to be some confusion around this achievement, hopefully I can clear it up!

"5:1 damage-to-kill ratio" means, you need to inflict 5 times the amount of damage to your kills, the best method for this is to just back up other players and cause as much damage as possible.

If you get 1 kill, you need to inflict a score of 5 for damage, if you get 5 kills then you'll need to inflict 25 points of damage.

You can see your kill/damage ratio by looking through the in game leaderboards, you can also see it in the post game leaderboards, which I realise will be too late if you've not got the achievement, but you'll get an idea of what tactics to use and such.

Lastly, you don't need to get exactly 5:1 damage to kill, your damage can be higher then that ratio. For example getting a ratio of 11:1 would still unlock the achievement!

For one match, just whenever you see an enemy, shoot them alot, but don't kill them, then teleport or smoke away, find another enemy, rinse and repeat. Make sure to kill at least one enemy because I'm not sure if having 0 kills would screw up the ratio.

You can easily get this while boosting weapon kills in a private game (at least 4 v 4 to count, obviously).

You have 3 people dying and 1 reviving on the opposing team. Shoot the 3 people dying 3 times (human opponents) each with your pistol THEN have someone else kill them (usually whoever is boosting weapons). When they've been revived do the same again until they all eventually bite the final bullet and the round ends.
Do this for the first 3 rounds, then at the end of round 3 when only the revivor is left, kill him for your ONE and only kill. At this point your ratio should be around 10 or higher, so sit back (don't kill anything else) and wait for the person boosting their weapons to complete rounds 4, 5 and 6.

And just to clarify no-one should be casting Tree of life.