10 MINUTES TOO EARLY
Find the Holo-Drone
Halo 2 10 MINUTES TOO EARLY – Achievement Guide
Complete Skull and Terminal CHECKLIST(Halo 1-4 / Google Docs)
This Achievement is right at the start of the mission. Walk into the first big room and walk right. Jump on the pillar and get in the opening above you with a grenade jump. The Holo-Drone is sitting there and the achievement will pop.