This can be a pretty difficult achievement to get but in this guide i am gonna tell you a litte trick on how to get it very easy.First of all you will need go in Armax Arena on Citadel (for have access to this,you will need to start the Shore Leave/Citadel dlc)..once you are at arena you need go to your left and a Turian VI will let you know you can go downstairs and start your matches.

For get this achievement you will need earn 6 k points and buy ''Mirror Match'' from Gold Awards...for get these 6 k achievements very easy i suggest you to buy reapers enemies as they are a bit stronger than normal npcs and you will get 6 k points in no time ( you need get 6 k in one match) once you got these go and make your buy and head back down to the select settings screen.

Select your enemies to be the one with N7 logo and after everything will be set as default;as usual select your squadmates and you are ready to go.If you play on normal,hardcore or Insanity and think you are up to the task go for it be warned you will play against your multiple clone with different classes on these difficulty can be little bit hard but if you up for it have your fun.

If you just want to get this achievement the easy way you need to select your difficulty to narative and fight till you reach round 3..on round 3 make sure you have left at least 2 enemies once you have them go back to your in game settings and select difficulty normal,hardcore or Insanity,go back kill the last enemies and if you done it achievement will po-up.

Have fun and enjoy !!