Complete the indicated task to unlock the corresponding relic.

Relic	How to unlock
Bigger Clips	Complete the game with Mia in your party
Crossbow/Assault Rifle	Complete the game.
Faster Stronger	Complete the game with Sheila in your party.
Item Boost	Complete the game with Swenson in your party.
Marksman Boost	Complete the game with Harrison in your party.
Melee Boost	Complete the game with Jane in your party.
Silenced Weapons	Complete the game with Blake in your party.
Stealth Movement	Complete the game with Warren in your party.
Survivor Success	Complete the game with Noah in your party
Unlimited Ammo	Unlock every other relic.