Shocking Behavior Trophy in Call of Duty: Vanguard

You should first get to at least level 4 before attempting this trophy, this is because you can then change loadout ingame and do many trophies on the same run.

Once you are level 4, go to weapons => loadouts and create 4 different loadouts with the same weapon. For each of them choose one of the 4 different artifacts. Now ingame, press and you'll be able to change loadout and it will actually change your artifact. For this trophy you'll need the Energy Mine artifact equipped. The artifact will be activated by pressing  +  but you need to charge it first, by killing zombies. When activated, a blue Energy Mine will be deployed and when zombies will walk to it it'll explode and zombies will get instakilled. This count for this trophy so keep doing that. This is best done on a Harvest challenge at round 4-5 so there will be an infinite amount of zombies.