Here is the full list of all 30 Frontlines: Fuel of War achievements worth 1,000 gamerscore.
Complete the first mission on normal difficulty or higher.
Complete the third mission on normal difficulty or higher.
Complete the second mission on normal difficulty or higher.
Complete the fourth mission on normal difficulty or higher.
Complete the fifth mission on normal difficulty or higher.
Complete the sixth mission on normal difficulty or higher.
Complete the final mission on normal difficulty or higher.
Complete the first or second half of a mission with an accuracy higher than 50%.
Be the player with the highest score on the winning team of a ranked match.
Score 5 kills in a row without dying in multiplayer.
Score 10 kills in a row without dying in multiplayer.
Win a ranked match without dying.
Finish a ranked match with an accuracy level higher than 40%.
Commit suicide 10 times in a multiplayer game.
Complete the first mission in under 15 minutes.
Complete the third mission in under 25 minutes.
Complete the second mission in under 25 minutes.
Complete the fourth mission in under 50 minutes.
Complete the fifth mission in under 30 minutes.
Complete the sixth mission in under 25 minutes.
Complete the final mission in under 40 minutes.
Multiplayer: Knock off 20 enemy hats.
Kill 100 hostiles without dying in the first or second half of a single player mission.
Complete the first mission in a single session without dying.
Complete the third mission in a single session without dying.
Complete the second mission in a single session without dying.
Complete the fourth mission in a single session without dying.
Complete the fifth mission in a single session without dying.
Complete the sixth mission in a single session without dying.
Complete the final mission in a single session without dying.