Full list of all 20 Mass Effect: Infiltrator achievements worth 200 gamerscore. It takes around 10-12 hours to unlock all of the achievements on Windows Phone.
You upgraded all Abilities, Biotics and Melee skills
Unlock all skills
You unlocked all equipment
You completed the Renegade ending
You obtained 3 star rating for Health 15 times
You obtained 3 star rating for Time on 15 separate occasions
You obtained 30 pieces of Intel
You fully upgraded a weapon
You alternated Body Armor and / or Helmet in any level at each Checkpoint
You performed 25 headshots with the Sniper Rifle
You finished the Bonus missions
You completed the Paragon ending
You completed the game
You fully upgraded a skill
You defeated X1
You collected 1000 credits from terminals/vaults
You executed a chain kill of 5 or more enemies
Obtain a 3 star rating for Style 15 times
Obtain 15 Veteran statuses after a Checkpoint
Achieve a style rating of 30 or more in a single battle/checkpoint