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