Here is the full list of all 27 Gear Up achievements.
Back playing after more than one week of Gear Up absence.
Assist in capturing at least 20 conquest towers in a single round.
Win 20 deathmatch rounds.
Destroy 1500 enemies
Win 20 team deathmatch rounds.
Win 20 conquest rounds.
Capture a conquest tower together with 3 or more teammates.
Win a Conquest round overwhelmingly, with a ratio of 4:1 or higher.
10 kills in a row
Win 3 conquest rounds.
Killed a deserting enemy
Win a TDM round overwhelmingly, with a ratio of 4:1 or higher.
Recieve 500 damage without being destroyed in a round.
Destroy 100 enemies
Destroy 75 enemies
Destroy 50 enemies
Destroy 25 enemies
6 kills in a row
4 kills in a row
3 kills in a row
2 kills in a row
Repair 30000 armor in lifetime.
Repair (1250) armor in one round of a team game mode.
Destroy 10 enemies with the default starter cannon.
Destroy at least seven different opponents in a team game mode.
Destroy 20 enemies with the Grayhound (saws).
Drown in the water at least once.