Here is the full list of all 49 Battlezone achievements.
Complete 1 mid-campaign mission
Defeat a Nemesis
Destroy a Shield Generator
Enable the active reload
Kill a UFO
Lose all your lives
Win a mission without firing a shot
Complete 1 early campaign mission
Convert a building
Launch a probe
Complete the intro mission
Complete a mission without taking damage
Complete a medium campaign on easy difficulty
Complete a long campaign on easy difficulty
Complete a medium campaign on normal difficulty
Complete a long campaign on normal difficulty
Complete a medium campaign on hard difficulty
Complete a long campaign on hard difficulty
Kill a light tank with the heavy cannon
Complete a mission with 4 players
Complete 1 late campaign mission
Kill 2 enemies with 1 shot
Visit every Supply Point on a campaign map
Reveal all hexes on a campaign map
Use turbo for a total of 1 hour
Kill 4 enemies with a single multi-lock on salvo
Get 100% accuracy in a mission
Get a kill with a power shot
Shoot down an incoming homing missile
Kill a hopper with the artillery
Reach the Volcano
Drive every tank
Beat the campaign with 4 players
Complete a campaign without destroying any Shield Generators
Destroy all Shield Generators in a campaign
Beat the AI Core
Fill all the loadout slots on your tank
Kill an enemy from more than 120m away
Destroy 1000 enemy tanks
Destroy 500 enemy hoppers
Destroy 750 enemy towers
Max out shields and equip the shield boost
Unlock 100 Weapons
Complete a medium campaign on hard without losing a life
Collect 10,000,000 data
Get 3 kills with a single artillery shot
Go from start to finish with the same 4 players
Complete 10 campaigns on normal difficulty or above
Complete a campaign on Extreme