The article explains where to find the three hidden skulls and one terminal in “Halo”, the second mission of Halo: Campaign Evolved. These collectibles modify gameplay or add lore, and the guide stresses that one skull is especially difficult to reach because it requires a grenade jump, so players should keep frag grenades available.

The Forgotten terminal is located shortly after receiving the Warthog, inside an underground structure reached after rescuing the first lifeboat. The Give & Take skull is in a cave stream near the rightmost lifeboat objective and makes weapon fire drain shields while damaging enemies restores them; Floor is Lava sits in a rock crevice near a burning lifeboat and causes continuous damage when touching the ground. The final Grunt Funeral skull makes Grunts explode in plasma when killed.