Here is the full list of all 69 Guns and Robots achievements.
Play 100 games
Collect and deliver all enemy Batteries in a Capture the Batteries game
Destroy 50 robots
Reach Level 20
Plant the Bomb and win the Objective in a Bomb Squad game
Destroy 10 enemy parts in a single game
Complete a game with 60% Accuracy and at least 2 kills
Survive a Deathmatch as the last player remaining (At least 1 kill)
Spend 10, 000 Credits
Reach the Recruit ladder league
Reach the Veteran ladder league
Defuse the enemy Bomb and win a Bomb Squad game
Win 10 games
Destroy an enemy while your Chassis is destroyed
Play 20 games
Destroy 10 robots
Reach Level 7
Buy 20 new parts
Complete a game with 55% Accuracy and at least 1 kill
Personalize your Robot's name
Gain your first Level
Buy 10 new parts
Buy 5 new parts
Buy a new part for your robot
Reach Level 35
Reach Level 55
Reach Level 80
Play 500 games
Play 1000 games
Play 2500 games
Win 100 games
Win 500 games
Win 1000 games
Win 2000 games
Destroy 120 robots
Destroy 250 robots
Destroy 500 robots
Destroy 750 robots
Destroy 1200 robots
Deal at least 2500 damage in a single game
Deal at least 5000 damage in a single game
Complete a game with 65% Accuracy and at least 3 kills
Destroy 3 players from an opposing team
Destroy all 5 players from an opposing team
Survive 10 Deathmatches as the last player remaining (At least 1 kill)
Survive 25 Deathmatches as the last player remaining (At least 1 kill)
Connect with 3 Friends
Connect with 10 Friends
Connect with 20 Friends
Create a Squad
Win a game in Squad
Win 10 games in Squad
Survive 50 Deathmatches as the last player remaining (At least 1 kill)
Buy a portrait
Buy 3 portraits
Win a game of Capture the Batteries in less than 1,5 minutes
Destroy 2 enemies while your Chassis is destroyed
Spend 500, 000 Credits
Destroy 3 enemies while your Head is destroyed
Spend 150, 000 Credits
Defuse the enemy Bomb with 5 seconds left or less
Plant your Bomb, defuse the enemy Bomb, and win the game
Win a game without firing a shot
Destroy an enemy while your Head is destroyed
Spend 50, 000 Credits
Buy an Accessory
Reach the Experienced ladder league
Reach the Terminator ladder league
Reach the Master ladder league