Achievement 'You're Coming With Me' worth 25 Gamerscore
You should get this achievement just by playing regularly, but if you are striving to get it out of the way, here are a few ways to obtain it.
In a fire fight? About to die? Throw a grenade and pray you get lucky to kill the person who killed you! Simple, yet difficult. The grenades in Shadowrun are more random then I would like to admit, they will bounce off anything and fly anywhere, maybe even into a pack of teammates. So, be cautious when using them as a last resort, as they very well might get you voted out of the game.
This way is quite easy, but will depend on an ally's help. At the start of a round, an ally must buy the spell Resurrect (2000 CR). Now, simply get killed and wait for an ally to Resurrect you. Next you must get lucky enough to kill the same person who killed you earlier in the round. This way is easier then the next method listed, but will require a little bit of luck.
Use a katana to bleed them out:*
Once the round starts, buy a katana (1000 CR). Now you need to play Mr. Sneaky; find a high traffic area of the map and stay hidden. Once you see an enemy** pass by your hiding spot, wait for a '?' to appear above their head, then come up behind them and hit them with the katana. This will cause them to bleed out. Now, run in front of them and simple let them kill you. A couple seconds after they kill you, they will die themselves from you bleeding them out. Boom. Achievement.
* You can't bleed out dwarfs, only humans, elves, and trolls.
** I recommend playing an elf for this way.
Also, you must avenge your own death the same round you were killed. For instance if -Opponent 1- kills you on the first round of the game, and you kill -Opponent 1- on the second round, you will not get it.