C.A.S.T.

Ammo

Very common93.7%

Find an ammo box

Common modifier

Very common92.7%

Get any common modifier

Exterminator

Very common84.1%

Defeat a total of 100 enemies in combat

First difficulty

Very common81.3%

Complete any mission at first difficulty

Resources

Very common76.0%

Find a resource box

Swamp

Very common75.9%

Complete the Swamp mission

Upgrade weapon

Common69.4%

Upgrade any stat of a weapon

Relic

Common61.2%

Find a relic

Ruins of Stone Cliff castle

Common56.5%

Complete the Ruins of Stone Cliff castle mission

Second difficulty

Common55.7%

Complete any mission at second difficulty

Clean Source Complex

Common55.6%

Complete the Clean Source Complex mission

Random modifier

Common55.4%

Buy a random modifier

Scanner

Common55.1%

Place a total of 3 scanners

Rare modifier

Common54.8%

Get any rare modifier

Thunder Wasteland

Common51.1%

Complete the Thunder Wasteland mission

Third difficulty

Common47.0%

Complete any mission at third difficulty

Sergeant

Common46.1%

Unlock sergeant character

Rare weapon

Common44.9%

Buy a rare weapon

Beast's Core

Common42.8%

Complete the Beast's Core mission

Teammates

Common40.9%

Help a teammate to stand up

Fourth difficulty

Common40.3%

Complete any mission at fourth difficulty

Fifth difficulty

Uncommon36.4%

Complete any mission at fifth difficulty

Headshot

Uncommon36.1%

Defeat a total of 250 enemies by headshot

Upgrade modifier

Uncommon35.7%

Upgrade any modifier

Craft

Uncommon33.3%

Craft any item

Epic modifier

Uncommon31.4%

Get any epic modifier

Sixth difficulty

Uncommon28.9%

Complete any mission at sixth difficulty

Reanimated Soldier

Uncommon25.2%

Unlock Reanimated Soldier character

Fully upgraded weapon

Uncommon24.8%

Upgrade any weapon to it's maximum potential

Seventh difficulty

Uncommon23.9%

Complete any mission at seventh difficulty

Epic weapon

Uncommon22.6%

Buy an epic weapon

Dismantle

Uncommon21.4%

Dismantle any item

Eight difficulty

Uncommon20.7%

Complete any mission at eight difficulty

Legendary weapon

Uncommon20.4%

Buy a legendary weapon

Common weapon

Uncommon19.9%

Buy a common weapon

Ninth difficulty

Uncommon18.2%

Complete any mission at ninth difficulty

Tenth difficulty

Uncommon18.0%

Complete any mission at tenth difficulty

Legendary modifier

Uncommon17.7%

Get any legendary modifier

Guard

Uncommon12.6%

Unlock Chernozem's Guard character

Eleventh difficulty

Uncommon12.3%

Complete any mission at eleventh difficulty

Twelfth difficulty

Uncommon10.0%

Complete any mission at twelfth difficulty

Fifteenth difficulty

Rare9.4%

Complete any mission at fifteenth difficulty

Thirteenth difficulty

Rare8.5%

Complete any mission at thirteenth difficulty

Fourteenth difficulty

Rare8.0%

Complete any mission at fourteenth difficulty

Hunter

Very rare4.3%

Kill the Hunter