From Halopedia, the Halo wiki
Death Island is a multiplayer level originally exclusive to Halo: Combat Evolved for PC and Halo Mac. It is included in The Master Chief Collection. The level is very similar to the Halo: Combat Evolved campaign level The Silent Cartographer. The map is fairly large, with a recommended number of eight players for an ideal match for any gametype.
Death Island features two bases, one for Red team and the other for Blue team, which are on opposite sides of the island. These bases each contain two teleporters, which lead either to a Shade gunner's outcrop or a platform on top of the base, where players can find two Banshees, a Ghost, and a sniper rifle. The map supports vehicle gameplay, such as the Warthogs and Scorpions that spawn near the bases.
In the center of the map is a large permanently closed hatch, similar to the one that the Pelican Echo 419 enters at the end of The Silent Cartographer. On it lies an Overshield, along with a rocket launcher, a shotgun, a fuel rod gun, grenades, and a health pack.