Here is the full list of all 51 Battle of Frigates achievements.
Save 50 people
Find 25 chests with treasure
Find 20 chests with treasure
Find 15 chests with treasure
Find 10 chests with treasure
Find 5 chests with treasure
Save 100 people
Save 80 people
Destroy 20 bosses
Destroy 15 bosses
Destroy 8 bosses
Destroy 4 bosses
3 hours in this amazing game
Destroy 200 enemy ships
Destroy 150 enemy ships
Save 25 people
Find a new ship 20 times
Explode 50 times on a mine.
Find a new ship 15 times
Explode 35 times on a mine
You have found 200 bonuses
Sank 50 times
Bomb has been planted 120 times
Find a new ship 10 times
Explode 20 times on a mine
Destroy 100 enemy ships
You have found 150 bonuses
Find a new ship 5 times
Sank 30 times
Bomb has been planted 80 times
Explode 10 times on a mine
Sank 20 times
Bomb has been planted 50 times
You have found 100 bonuses
Destroy 50 enemy ships
Destroy 1 boss
Shoot 300 times
To have loss in amount of 60 units
Save 10 people
You have found 50 bonuses
Shoot 200 times
To have loss in amount of 40 units
You have found 25 bonuses
Shoot 150 times
Sank 10 times
Bomb has been planted 10 times
Shoot 100 times
Destroy 10 enemy ships
To have loss in amount of 20 units
Shoot 50 times
To have loss in amount of 10 units