Doom Eternal - Arc Complex collectable locations

Arc Complex is the sixth level of Doom Eternal, following on from Super Gore Nest.

As the name implies, this is a rather complicated area that takes you through several buildings and underground sections as you search for Samuel Hayden's whereabouts. Expect many collectables and secrets along with dozens of demons, as expected.

It's also the first time you encounter the Marauder - one of the toughest enemies in the game.

If you're looking for other things to find in the game, our Doom Eternal secrets page can help

On this page:

Doom Eternal Arc Complex Albums locations (2)

In one of the last underground areas, the one which is marked by three big grey cylinders on the map, head towards the far end close to the secret encounter and pick up the '?' sign to unlock the 'Quake II - Quad Machine' album.

Before heading the arena as you're heading towards Samuel Hayden's base, make sure to pick up the 'Quake II - Intro' album from the corner on the southern end.

Doom Eternal Arc Complex Cheat Code location (1)

As you're making your way to fire the east turret, make sure to grab the Modbot that is close to the mission mark, and then look for a hole in the ground. Pick up the '?' sign to unlock the 'IDKFA' cheat code.

Doom Eternal Arc Complex Codex Entries locations (5)

In order to obtain 'The Arc - Part I' codex entry, look for the area that is close to the Slayer Gate arena. You know the drill, look for the crack on the wall and you'll gain access to a small area with the codex entry inside.

The 'Samuel Hayden' codex entry can be found right in front of a secret encounter, located before the gap in a massive building on fire that is split into two.

After finishing the arena that happens indoors in the restaurant-like area, look for a counter right around the corner and grab 'The Arc - Part II' codex entry.

As you're making progress towards the west turret, you'll find yourself on a long corridor that leads to a small area. In there you'll find 'The Return of Dr. Samuel Hayden - Part I' codex entry.

In the underground area with the long corridor that starts with a ring-shaped corner, head below to pick up the 'The Return of Dr. Samuel Hayden - Part II' codex entry.

Doom Eternal Arc Complex Empyrean Key location (1)

From the same room with the toy and sentinel battery, jump all across and attach yourself to the wall, and jump did yet another jump to grab the Slayer Key. Luckily the Slayer Gate is located on the same building, so just let yourself drop down and complete the additional arena to gain the Empyrean Key.

Doom Eternal Arc Complex Modbots locations (2)

As you're making your way to fire the east turret, make sure to grab the Modbot that is close to the mission mark.

Yes, you're still making your way to the east turret, but at least you'll get to obtain a second Modbot. Look for a crack on the wall, punch it and just head underground.

Doom Eternal Arc Complex Praetor Suit Points locations (5)

As you're making progress through the first steps of the mission, approach the end of a corner and look for a crack on a glass door. Once opened, you'll be able to pick up a Praetor Suit Point.

Keep progressing through the mission until you end up seeing the mission mark on a wall, before making the jump, grab the Praetor Suit Point.

There's another Praetor Suit Point waiting for you right alongside a secret encounter, located after the gap in the massive building on fire that is split into two.

As you're making progress towards the west turret, you'll find yourself on a long corridor that leads to a small area. In there you'll find an additional Praetor Suit Point.

After that big arena with the hole in the centre, go outside the area and pick up the Praetor Suit Point nearby.

Doom Eternal Arc Complex Runes locations (2)

Right before dropping on a new arena, take a detour through the right pathway that is set on fire and grab the Rune at the end.

At one point of the mission you'll be close to an underground arena just by following the quest mark. Before going full throttle, make sure to pick up another ability from the Rune.

Doom Eternal Arc Complex Sentinel Batteries locations (3)

As you're making progress towards firing the east turret and you come across the indoors room with the balconies, take the stairs and jump all across the room to obtain a Sentinel Battery.

There's a second Sentinel Battery located on an isolated corner as you're making progress towards the west turret.

Right before entering one of the last moments of the mission where the floor is covered in purple, make a jump and grab another Sentinel Battery along with some ammunition for your rocket launcher, as a treat.

Doom Eternal Arc Complex Sentinel Crystal location (1)

In order to obtain 'The Arc - Part I' codex entry, look for the area that is close to the Slayer Gate arena. You know the drill, look for the crack on the wall and you'll gain access to a small area with the Sentinel Crystal.

Doom Eternal Arc Complex Toys locations (3)

As you're starting the mission, and right before entering the arena, make a slight detour to the corner marked in the minimap to pick up the 'Mancubus' toy.

As you're making progress towards firing the east turret and you come across the indoors room with the balconies, take the stairs and jump all across the room to obtain the 'Cueball' toy.

Close to the additional area where you've found the codex entry and secret encounter right upfront, look for the corner that is shaped as an arrow on the minimap. Once in there, pick up the '?' sign to obtain the 'Whiplash' toy.

All done? Our Mars Core collectables locations guide can help with the next area, while our Doom Eternal secrets hub and dedicated Rune locations and Sentinel Battery locations pages cover everything else to find in the game.