Here is the full list of all 68 Tannenberg achievements. It takes around 15-20 hours to unlock all of the achievements on Windows.
Playing as the Entente Powers, capture the enemy HQ.
Playing as the K.u.K, lose a battle in the Carpathians.
Using a sword, kill an opponent who is also using a sword.
Used voice commands 50 times.
Kill 3 people with a sabre in an enemy held capture zone.
Be the first to get killed by an enemy in a game.
Die from falling down.
Win 10 matches as the Entente Powers.
Kill 4 enemies with a single grenade or call in.
Get a kill from 150m.
Win 10 games as the Central Powers.
As Frontovik, while crouched, get 3 grenade kills.
Club someone to death with binoculars.
Cut off at least 3 enemy sectors.
Kill an enemy soldier manning a heavy machine gun with a head shot.
Make a successful retreat
Start a private match.
Playing as the Infanterie, win a battle in East Prussia.
Kick a bot off of a heavy machine gun.
Die 10 seconds after spawning.
Get 10 kills with swords.
Chop off someone's limbs with a sword.
Unlock all specializations for the Bulgarians
Unlock all specializations for the Latvians.
Become cut-off in a sector.
Exhaust all your revolver ammo without missing a shot.
Unlock all specializations for the Roumanians
Kill 25 enemies with a HMG.
Fight in every weather condition.
Perform a role switch.
Switch to other team when asked for autobalance.
Win a game with a points difference of 100 or less.
Used voice chat.
Capture an enemy sector alongside 10 or more other people.
Issue 10 command orders.
Visit every sector in a Maneuver match.
Capture 10 enemy sectors.
Kill 10 people with a heavy machine gun in a single life.
Resupply your ammo.
Check out the credits screen.
Kill 25 enemies with artillery as the Central Powers.
Get killed by bots 50 times.
Win 25 Gold Medals.
Get killed by your own grenade.
Kill 25 enemies with artillery as the Entente Powers.
Make 5 kills within the first two minutes of the match.
In a single life, take damage from melee attacks and gun shots from a player or players, before being killed by someone entirely different.
Get 50 artillery kills using trench phones.
Unlock all specializations for the Frontovik.
Unlock all specializations for the Cossacks.
Unlock all specializations for the K.u.K. Trupp.
Unlock all specializations for the Infanterie.
Be part of the top scoring squad in a match.
Playing as the Central Powers, capture the enemy HQ.
Get the first kill in a match.
Complete a match on a night map.
Complete a match on a snowy map.
Complete a match on a foggy map.
Kill an enemy while shooting through an object.
Have your entire squad agree on a vote to change the squad name or type.
Get a kill while injured.
Call in Artillery or Recon from a sector.
Shoot an enemy while being suppressed or shaken by artillery.
Kill 5 NCO's in a match.
Get 7 squad spawns on a single life as NCO.
Kill 4+ enemies in a capture zone.
Have a look at the overview map.
Damage two enemies with one bullet.