Primary Excavation: Artifact Dig

"So you've made it this far."

- Malcolm Betruger

Primary Excavation: Artifact Dig is the twenty-seventh and final level of Doom 3. The player must defeat the fourth and final boss, the Cyberdemon, in order to seal the Hell portal. Imps, Maggots, and the Cyberdemon are the only enemies in this level. An exploratory player may find the hidden "id Software" PDA, containing messages from several id Software employees.

Summary
The marine descends to the Primary Excavation Site where he finds an enormous cache of supplies waiting for him. After taking as much as he can, the marine heads into the Hero's Burial Chamber. A wall opens up to reveal a passageway leading to a stone chamber that takes the marine down into another secret passageway aligned with candles and demonic icons. Coming to the end of this passageway, the marine enters an enormous cavern. Here is the Hell Hole and as well as the game's final boss: the cyberdemon.

The marine battles the cyberdemon and its imp and maggot minions which come pouring out of the Hell Hole. Despite the odds, the marine defeats the massive demon after striking it four times with the Soul Cube. The Cube kills the cyberdemon by slicing off one of its legs, then impaling its blades into its head. The Soul Cube then flies into the Hell Hole, causing lava to boil over and solidify, sealing the portal and ending the demon invasion at last.

Days later, the Fleet from Earth arrives. Marines and sentry bots enter the Delta Complex to find the entire base in ruins with everyone dead. They manage to locate a single survivor - the marine - who is promptly evacuated off the planet. Counselor Swann is also found, but he has died from his wounds. Dr. Betruger is nowhere to be found...

The final scene of the game reveals that Betruger is in Hell and has been transformed into a giant dragon-like demon: The Maledict. The Maledict swoops down at the screen which cuts to black, and the credits roll.

PDAs

 * Id Software. Found in a secret chamber near the Hell Hole.

Characters

 * Doomguy
 * Malcolm Betruger/Maledict
 * Elliot Swann (dead)
 * Marines
 * Recon Zulu
 * Echo One (voice only)
 * Sentry Bots

Weapons/Items
The amount of items is the same on all skill levels. The backpack contains bullets (40), shells (20), clip (100), ammo belt (50), hand grenades (4), cells (25), rockets (4), BFG cell (4), health (25), armor (25).

The two plasma guns on the level are actually multiplayer pickups, and thus will give the player 30 cells instead of 50.

The single pistol clip is located in the Hell's starting area (the one that is shown in the ending cutscene with Maledict), which is inaccessible to the player without cheats.

Trivia

 * When the player enters the cyberdemon's arena, they will receive the ability to sprint indefinitely, just like in Hell.