The Apocalypse Add-on for Battlefield 1 has 5 trophies - 4 bronze and 1 gold.
Perform a melee kill on a Flametrooper Elite
Perform 1 kill with the Livens Projector
Perform 1 kill with the Broken Bottle
Destroy 5 airplanes while in the Behemoth Airship L30
Perform a kill with all "Apocalypse" weapon variants