Here is the full list of all 56 Verdun achievements worth 1,000 gamerscore.
Reach 5,000 kills
Unlock all specializations for the Belgians
Receive all gold medals
Receive the gold medal "Most shots & none missed" 10 times
Reach personal level 50
Receive a total of 100 gold medals
Make 500 melee kills
Gain 10k co-op XP with a player
Make a triple kill with explosives/grenades
Kill an enemy player while you are dead
Kill 10 enemies as a squad NCO in 1 match
Unlock all specializations for the Landser
Survived a full Frontlines match without dying.
Reach 500 kills
Receive the gold medal "Best Kill/Death ratio over 10 kills" 10 times
Receive the gold medal "Most headshots" 10 times
Receive the gold medal "Longest killstreak" 10 times
Receive the gold medal "Best player" 10 times
Receive the gold medal "Most kills" 10 times
Reach level 25
Unlock all specializations for the Tommies
Receive a total of 100 bronze medals
Make 100 melee kills
Make 10 melee kills
Unlock all specializations for the Pioniers
Unlock all specializations for the Stoßtrupp
Unlock all specializations for the Alpenjäger
Unlock all specializations for the Doughboys
Unlock all specializations for the Marines
Unlock all specializations for the Schutzen
Unlock all specializations for the Canadians
Unlock all specializations for the Poilus
Unlock all specializations for the Chasseurs
Make 100 headshots
Kill an enemy from over 100 meters
Join a friend
Check out the credits screen
Receive all gold medals 10x
Receive all silver medals 10x
In a Frontlines match headshot 5 enemies in a row without dying.
Make 5,000 headshots
Play together with the same friend 250 times
Gain 250k co-op XP with a player
Play together with the same friend 100 times
Reach 10,000 kills
Receive all silver medals
Gain 50k co-op XP with a player
Reach level 100
Gain 100k co-op XP with a player
Make 1,000 headshots
Play together with the same friend 50 times
Reach level 75
Receive a total of 100 silver medals
Receive the gold medal "Best defence squad" 10 times
Receive the gold medal "Best advancing squad" 10 times
Receive the gold medal "Best squad of match" 10 times