The player starts out with a Covenant Carbine and a Plasma Pistol. To the left is a pair of Needlers which are recommended because they are very effective against the Sentinels. A swarm of harmless Constructors is seen flying about zapping their repair beams before flying further ahead. Head towards the lighted section of this room and on the left will be a piston. A cowardly Grunt Major will be hiding in a corner, occasionally he will follow you. If he does give him a needler. Activate the piston and then jump down. (On higher difficulties the pistons are activated by shooting or melee). Beneath it is another Piston and Sentinel Launchers. At the end of the hall will be another piston. Active it and jump down.