Here is the full list of all 25 Snake Force achievements. It takes around 0-1 hour to unlock all of the achievements on Windows.
Embraced the death for the first time.
Completed a level with four members in the team.
Having ten bros in your team.
Killed 10 hostages.
Killed all bros after finishing a level.
Finished the game.
Completed a level with 8 members in the team.
Killed exactly 4 units with one barrel explosion.
Finished the Badass mode.
Killed 20 friendly bros.
Killed an enemy for the first time.
Killed 50 enemies.
Killed 100 enemies.
Killed by an explosion.
Finished Level 1
Finished Level 2
Finished Level 3
Finished Level 4
Finished Level 5
Rescue 50 bros.
Complete a level without killing any enemy.
Finished First Person Mode
Finish the Badass Mode or First Person Mode with the Suit Man.
Defeat The ?
Finish the Badass Mode or First Person Mode with the ?