Mass Effect: Andromeda
55 Achievements
Terminator
Kill 2000 enemies.
How to unlock the Terminator achievement in Mass Effect: Andromeda - Definitive Guide
If you are trying to complete this quickly I would do multiplayer on the bronze difficulty level because it takes quite awhile of game play in the campaign to encounter enemies and even then they only spawn in groups of 3-5.
If you die just reload auto save and keep on killing. Yes the kill counter in statistics seems to be reloaded back as it was before this section but I got the trophy after reloading auto save 2 times so this worked for me.
P.S. Fiend has a chance to instantly kill you so don't get too close.
I would suggest finishing the game's campaign and then playing MP for the rest if you need any. Playing Bronze matches in MP will allow for easy kills, and the enemies spawn much more quickly in MP than you'd find in SP. Otherwise you could start a NG+ on Narrative difficulty and just run through the story a second time. This achievement can be worked on in both SP and MP, in any combination.
You will accumulate 2,000 enemies kills through natural play on your road to earning the platinum trophy. Both enemies in multiplayer mode and single player count and are cumulative in any combination of the two. If after completing all other trophies and you still haven't earned the trophy, you can either grind this trophy by starting New Game Plus in single player on the easiest difficulty (Narrative mode) to speed things ups, or play multiplayer mode in a private custom match to get all the kills yourself.
Statistics can be viewed in "skills" and (successes-kills defeated by player)