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