Learn all player upgrades in one branch

Learn a player upgrade

Find the Engraved Ring

Just prior to City Chase, stand perfectly still for 30 seconds (stage demo fail)

Listen to all optional conversations in game

Find all Treasures

Find All Journal Notes

Find 50 treasures

Drive away in the jeep with Elena without killing any enemies

After being marooned, leave everyone alive until the Treasury

Defeat enemies with a stealth attack, melee attack, headshot, and explosives, in that order, in 15 seconds

Defeat 10 enemies in 60 seconds with the China Lake Grenade Launcher