Here is the full list of all 23 Frontline Tactics achievements.
Deploy and extract a full team.
Blind and stun enemies.
Pepper more than one target with bullets.
Knowledge is power!
Swiftly defeat the enemy.
First successful mission turn boys to men.
Win some missions to get feet wet.
Win a lot of missions.
Unlock a little of everything.
Crossfire is good. More is better!
Use cover and survive longer.
Kill! Kill! Kill!
Unlock everything.
Defeat enemies of flesh and bone.
Kill multiple enemies in a single burst.
Grow your squad.
Perform slice and dice kills.
Defeat enemy elite troops.
Grenade fragments makes enemies bleed.
More skills are better than few.
Dual wield-r-us.
Horde a lot of credits.
Buying credits is totally OK!