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 completed the Renegade ending
You upgraded all Abilities, Biotics and Melee skills
You finished the Bonus missions
You completed the Paragon ending
You completed the game
You performed 25 headshots with the Sniper Rifle
You obtained 3 star rating for Time on 15 separate occasions
You obtained 3 star rating for Style 15 times
You obtained 3 star rating for Health 15 times
You obtained 15 Veteran statuses after a checkpoint
You unlocked all equipment
You alternated Body Armor and / or Helmet in any level at each Checkpoint
Unlock all skills
You defeated X1
You achieved a style rating of 30 or more in a single battle/checkpoint
You fully upgraded a skill
You obtained 30 pieces of Intel
You fully upgraded a weapon
You executed a chain kill of 5 or more enemies
You collected 1000 credits from terminals/vaults