DM-HeatRay

Pickups

 * 17x Health Vial
 * 6x Health Pack:
 * 2x below the Flak Cannon
 * 2x on a platform below the Shield Belt ledge
 * 1x on a wooden ramp from in the passage from the Rocket Launcher area to the outside Bio Rifle
 * 1x near the jump pad to the Armor Vest
 * Helmet
 * Armor Vest - on a roof reachable via a jump pad
 * Shield Belt - on a ledge above the Rocket Launcher
 * Invisibility - on a small ledge in the passage way between the Rocket Launcher area and the outside Bio Rifle, reachable via a small corridor that starts with some stairs near the Stinger Minigun
 * Damage Amp - drops from the Darkwalker husk
 * Berserk - drops from the Darkwalker turret

Weapons

 * 2x Bio Rifle (4x ammo)
 * 2x Shock Rifle (8x ammo)
 * 2x Link Gun (5x ammo)
 * 1x Stinger Minigun (6x ammo)
 * 1x Flak Cannon (5x ammo)
 * 1x Rocket Launcher (5x ammo)
 * 1x Sniper Rifle (3x ammo)

The Darkwalker
Two minutes after the match has started and two minutes after the Darkwalker has been destroyed, a flying transport shuttle arrives in the map, accompanied by a warning beep. The transporter enters the map above the Helmet/Shock rifle area, proceedes to the Rocket Launcher arena, turns around to pass over the corridor to the Invisibility, flies along over the old train station and finally hovers over the round platform to spawn a (new) Darkwalker.

When the Darkwalker is destroyed, it's lower part drops the Damage Amp and its upper part drops the Berserk. Often Darkwalker drivers decide to stay near its spawn area, so the upper part often ends up dropping into the water on either side of the Darkwalker spawn platform and no Berserk power-up drops.

The Darkwalker is disabled in the various single player missions until you get to fight the Necris on this map.

Tips and Tricks

 * With a double-jump and a wall-dodge and some practice you can get from the Armor Vest platform into the corridor that leads to the Invisibility.
 * The warning beep for the incoming transport shuttle is an ambient sound, so you may want to keep those enabled when playing HeatRay. If you disable ambient sounds you will have too keep track of the match time and/or often look up so you don't miss the transporter's arrival.
 * Stay in the train station area when you have the Darkwalker. The other areas of the map are too tight and give other players an advantage over the slow-turning Darkwalker.

Trivia

 * The hologram changes its animation when the Darkwalker arrives and returns to its original animation when the Darkwalker is destroyed. Additionally it plays the humping taunt animation when shooting at the red "TD4" sign below it.