Here is the full list of all 14 AirMech Arena trophies - there are 11 bronze, 2 silver and 1 gold.
Win an online match where 100% of the enemy's base health is taken within 1 minute.
Win a match, online or offline, without destroying any units with your AirMech.
Do 1,000,000 damage with your AirMech.
Complete the Tutorial.
Win 3-consecutive online matches.
Win 10 or more online matches in any game mode.
Reach Level 15 in any AirMech in an online or offline game.
Accumulate 100 direct AirMech Kills online against human opponents.
Win a solo survival match on any Survival map.
Win a 4-player online survival match on any Survival map.
Accumulate 20 human piloted enemy AirMech kills, each made while the enemy is carrying a unit.
Win 200 matched games.
Accumulate 45 Stars in the Challenges.
Destroy 3 human piloted AirMechs in the first 3 minutes of an online match.