Triggered an Elemental Explosion by Destroying a Machine's Canister

Completed a Legendary Climb

Constructed a Cairn

Crafted Elemental Ammo

Found a Lore Collectible in Horizon Call of the Mountain

Shot a Warning Beacon

Attend your first class

Craft every item

Use bricks or bottles to lure an infected into attacking a human

Win the brick throwing contest

Find all workbenches

Open all safes

While in stealth, turn off the spotlight generator in Pittsburgh