Defeat 4 enemies with the same explosion (all explosive items and weapons apply)

Defeat 50 enemies with headshots

Stealth take-down 30 enemies

Defeat 20 enemies with headshots

Hit all targets in the attic with the toy gun

Find a Treasure

Detached 10 components from machines during combat.

Used a Weapon Coil or Outfit Weave on a modifiable weapon or outfit.

Kill all of Odin’s Ravens

Use treasure maps to find all of the dig spots

Fully upgrade the Blades of Chaos

Complete all of the Trials of Muspelheim