Find a mysterious creature hidden in the temple.

Kill 10 guardians with headshots from the front while their shields are raised.

Find the hidden desert flower.

Kill 100 enemies with melee attacks.

Kill 1,000 enemies.

Reach level 15 in multiplayer or level 50 in single-player.

Complete three multiplayer matches or five N7 missions.

Overload the shields of 100 enemies.

Finish the game with the same partner for the majority of the journey and return to the beginning.

Sneak through the underground passage without tearing your scarf.

Complete one multiplayer match or two N7 missions.

Kill 250 enemies.

Start a character in multiplayer or customize a character in single-player.