Beacons are extra hidden objectives available in every single world. To unlock this trophy, start up world 1 (Techno Forest) on rookie difficulty. There are three beacons for you to destroy.
World 1-2: After spawning shoot up the trees directly north of your position. The beacon will reveal behind the treeline.
World 1-8: Head through the gauntlet until you reach the north-west area of the map. Now walk south on the glass passageway and you will see floating dust towards your left. Walking towards this dust will create a hidden walkway you can use to reach a supply drop, hidden human and the beacon. Simply follow the path north-north/west and you’ll spot the beacon immediately.
World 1-9: Head through the gauntlet until you are against a wall at the top-centre section of the map. Destroy the blue glowing rock and a secret area will reveal. The beacon is located on the northern side of the secret area.
All Humans, Beacons and Secret Exits - World 1