Perfect Dark Zero

Another option is to set up the match to have all 15 bots on Dark difficulty and Feud Personality. Change them all to your team except one which you can change to agent difficulty. Choose onslaught type "Threshold Time" and set the threshold to 10 mins.

Your bots will happily hunt down and kill the other bot if you are attacking else will make it almost impossible for it to get through if your defending. Leave your player in the furthest back room of your base and watch the time count down. (Note of warning: Keep an eye on your player. If your player is inactive too long it will wander off by itself, also there is a very slim chance the opposing bot will get through to kill you)

While this can be done against real people or bots, if you have a second controler let your charecter sit for 10 minutes. Then kill the opponent by using the second controler to follow the path to you then let you kill him, if set to 2 rounds just kill the next person quick and done. :) (Accidently posted as a comment.)

This Achievement is awarded for surviving during DarkOps: Onslaught matches. After surviving 10 minutes across all your Onslaught matches, the Achievement will unlock.

Like most multiplayer Achievements, this can be obtained by setting up a match against bots. Simply play one-on-one matches against a single bot to increase your survivability. Set up shop in the defending zone and pick him off as he approaches. Remember to watch for him on your radar.