The Campaign - Arc Complex

Start by meleeing the wall in front of you and dropping down the elevator shaft.

After the elevator falls, kill the Soldiers and Imps outside, followed by more Soldiers, Imps, and Prowlers.

A Mancubus, Whiplash, and Hell Knight will spawn; defeat them and collect the rocket ammo and health.

Head into the room with the fuel via the cracked glass and turn left to find a Secret Area containing a Mancubus toy.

Continue down the hallway, defeating a Pinky, Prowler, and Soldiers.

Enter the room at the end to grab ammo, then prepare for a Revenant that will burst through the door. Disarm and kill it.

Follow the hallway around, encountering Imps, Gargoyls, Soldiers, a Hell Knight, and a Mancubus. Use Ice Bomb and Blood Punch for crowd control.

Drop down at the end of the area.

Kill the Imps, Soldiers, and Whiplash, which will open a door.

Go through the door and drop down.

Kill the Soldiers and Carcass, followed by more Imps and Soldiers that spawn.

Drop down again. Follow the left path for ammo.

Head down and kill Zombies, followed by a large wave of Zombies, Soldiers, Imps, Carcass, and Mancubus.

Grab the gas can. Before moving forward, backtrack to the hallway, turn right, and melee the glass to access a Secret Area with a Suit Perk Point and ammo.

Head to the other side of the area. The room on the left contains rocket ammo.

At the end, jump up through the opening to the next floor.

Walk forward, collecting ammo, until the floor collapses.

Kill the Zombies and the Revenant that joins them.

Move forward and exit into the street, facing a large number of enemies including Zombies, Soldiers, Gargoyls, Mancubus, Revenants, Carcasses, and a Dread Knight. Use the environment and cover.

Loot the area for ammo, health, and shields. Press the button between the two red gates.

A Pinky will burst through a left wall. In this area, fight Soldiers, Imps, a Revenant, and an Arachnotron.

Head up the stairs to face a Cyber Mancubus, accompanied by a Hell Knight and Zombies. Defeat the Hell Knight with rockets, Glory Kill a Zombie, and Blood Punch the Cyber Mancubus, finishing it with rockets if necessary.

In the room where the Cyber Mancubus was, collect fuel.

Head up the stairs to battle Soldiers, Zombies, Prowlers, and Arachnotrons.

Climb to the wreckage in the center and jump to the upper floor on your right.

Kill the Imps that break through the wall. Locate the Weapon Mod-Station on the right.

Head up the stairs behind you. You will see the Slayer Gate on the right and the Auto Map-Station in front. Grab the Auto Map-Station.

OPTIONAL: To the right, find a climbable wall. Jump and dash to it, climb up, then double jump and air dash to reach the purple Slayer Key on the other side. Drop down the vent.

Facing the hole created by the Imps, swing on the bar, double jump, and air dash to reach the building on the other side.

Defeat the Gargoyls, Revenant, and Carcass that attack.

Look on the floor where they emerged to find a Secret Area containing the Cheat Code – IDKFA.

Head up the stairs, turn right past the glowing console, and melee the wall at the end to enter another Secret Area. Drop down and use the Mod-Station.

Head back and melee the green wall to the left to return to the hallway before the stairs.

Go up the stairs again and interact with the terminal.

Head left and drop down the shaft into the blue column. As you fall, dash into the Dash Refill and dash again to cross the gap.

Kill the Zombies and Soldiers on the other side.

Jump across the chasm and enter the large hole into the building.

Kill the Soldiers, Zombies, and Imps. From the entrance, head left, climb over rubble, and find a cracked wall.

Smash the cracked wall to enter a secret area. Head to the top of the stairs to get a Codex entry.

Back down, jump up the ledge, kill the Zombie, and use the Sentinel Crystal.

Smash the wall in this area to battle a Revenant and several fodder enemies.

Move through the area. At the end, look up from the large hole to see two bars. Swing on them and dash to reach the climbable wall on the right of the opposite building.

At the top, turn around and dash to reach the ledge.

Defeat the Imps and a Cacodemon. Prioritize the Cacodemon.

Climb up on the boxes. In the building across on the right, double jump and double dash to reach it. Grab the armor shards and press the terminal.

Melee the door and grab the 1-Up.

Return to the hole you came through. Look right and swing on the bar to reach the wall on the other side. Climb up.

To your right, double jump and dash to another piece of wall, then dash to the ledge on the left.

Upon entering, you will face Mech Soldiers, Zombies, and a Hell Knight. Drop down, use an Ice Bomb, and rockets on the Hell Knight; the splash damage will kill the others.

Head up onto the elevator and then onto the ledge.

When you reach the Hologram, look behind you and slightly to the right to grab the Suit.