Here is the full list of all 47 Band of Defenders achievements.
Unlock all tiers of all turrets.
Unlock all tiers of all barricades.
Upgrade any turret to level 9 in-game.
Upgrade any barricade to level 9 in-game.
Unlock all weapons (Weapons+Explosives+Medical).
Reach level 5.
Reach level 10.
Reach level 30.
Reach level 50.
Win Easy game.
Win Medium game.
Win Hard game.
Win Apocalyptic game.
Gain "Punisher" award.
Gain "Assist king" award.
Gain "Turret master" award.
Gain "Protector" award.
Gain "Boss slayer" award.
Gain "Sniper" award.
Open 50 crates.
Equip Epic knife skin.
Win 10 games.
Win 50 games.
Win 100 games.
Kill 500 enemies.
Kill 5 000 enemies.
Kill 20 000 enemies.
Have 100 headshot kills.
Lay 50 mines.
Use 50 grenades.
Build 50 barricades in one game.
Win game on Desert Ambush map.
Win game on Radioactive Night map.
Win game on Gas Station map.
Unlock your fist Epic item.
Finish in-game tutorial.
Kill your first enemy.
Play as a woman character.
Pick-up weapon dropped by other player.
Use 10 medkits.
Use 100 medkits.
Send an in-game chat message.
Play game with vendetta mask on your face.
Play game with equiped armor.
Play game with strawhat on your head.
Win game on crossroads map
Win game on hideout map