Finish the easter egg for "Time Travel Will Tell" and after obtaining the achievement the player will gain two new gamer pictures.

To activate the secret song in Shangri-La, you have to find all 3 meteorites. The first meteorite is located in the spawning room, to the left of the top-most window behind the Quick Revive machine. It will be laying near a broken down pillar. The second meteorite is located past the mud pits and perk machine, but before the bridge. The meteorite is laying in the grass to the left when facing the bridge from the perk machine. The third and last meteorite is located underground in the room past the AK74u. It is near the railing and is kinda across from the perk machine in that room. It should be sitting just above the water. To activate the meteorites you have to hold onto the use button. When all 3 meteorites are activated, the song Pareidolia by Elena Siegman will play.