The Problem

I've been circling Containment Block C for two hours. There's a turret shooting me across a broken bridge and some yellow barrier I can't open. What is the actual sequence here?

The Solution

Containment Block Helmholtz is the Level 3 clearance gauntlet. It has four distinct stages: (1) cross the live-fire checkpoint, (2) complete the zombie portal world, (3) pass the X-ray barrier with Leyak Essence, and (4) reset the security system. Each stage requires specific items. If you arrive without them, you will backtrack.

Prerequisites: What to Bring

Stage 1: Reach and Cross the Turret Checkpoint

1. From the Containment sector hub, find C-Block — the large multi-level open area.
2. Use your Tier 3 Keypad Hacker on the DIVAK doors marked with clearance level 3.
3. Take the elevator to the 2nd or 3rd floor. Look for a room covered in yellow paint and goop — it's hard to miss.
4. Drop down the hole in the yellow room. Use Level 3 clearance to open the gate at the bottom.
5. Follow the path until you reach a checkpoint: machine gun turrets on one side, a broken gap in the walkway, and you on the other side.

Crossing the Gap

Four methods, ranked by reliability:

• Wooden Bridges (recommended): Craft 3-4 bridges. Place them across the broken railing while standing back from the turret line of fire. Build fast — turrets track slowly but hit hard once locked.
• Gravity Cube (IS-0052): Activate it to reduce gravity, then jump across. Works if you don't have bridges.
• Jump Pad: Craft a spring pad and launch yourself over. Risky — overshoot and you land in turret fire.
• Shield + sprint: Block with a Metal Shield and run. Only attempt if you know the exact path. Not recommended for first clear.

Once across, open the flimsy iron gate. Enter the nearby vent to hack a keypad — this opens additional doors for the next stage.

Stage 2: Helmholtz (Zombie Portal World)

After crossing, you find a square portal. This leads to Helmholtz — a furniture store dimension filled with zombies.

Critical detail: Enemies do not spawn until you press the first switch. Use this grace period to scout the layout.

1. Bring 2 flashlights. It is extremely dark. The helmet-mounted light is not enough.
2. Navigate downward through the store. Look for wall switches — activate all of them.
3. After the last switch, enemies spawn. Fight your way back up or sprint past — the elevator activates after all switches are flipped.
4. The portal teleports you back to the top when complete. Take the elevator down to confirm it works (you will use it later).

Mistake people make: Clearing the zombie portal, then leaving without enabling the elevator. If you die later, you have to redo the entire portal sequence. Enable the lift.

Stage 3: The X-Ray Barrier (Leyak Essence Gate)

After Helmholtz, proceed through a steam-filled corridor with scattered enemies. At the end is an office overlooking the control center. A yellow X-ray barrier blocks your path.

1. Interact with the wall terminal next to the barrier. This teaches you the X-Ray Tower and X-Ray Lamp recipes. Do not skip this — you cannot open the barrier without these items.
2. You need 4 Leyak Essences to unlock the barrier.

How to Get Leyak Essence

Leyaks are those floating tentacle things that slowly drift toward you while making a soft sighing sound. They phase through walls and cannot be killed by normal weapons.

• X-Ray Tower: Build one at your base entrance. Plug it into a socket. Lure a Leyak into the beam — it vaporizes instantly and drops 1 Leyak Essence (red orb).
• X-Ray Lamp (portable): Craft using 1 Leyak Essence + battery components. This is the mobile version — you are not tethered to a wall outlet.
• Farm 5 total: Use 1 Essence to craft the X-Ray Lamp. Farm 4 more for the barrier. (Alternatively, farm all 5 and skip the lamp by using X-Ray Towers placed along patrol routes.)

Bring the 4 Essences to the X-ray barrier terminal, insert them, and the barrier drops.

Stage 4: Reset the Security System

You are now on the lowest floor of the security control center. Turret placement is dense.

1. Hug the right wall as you enter. There is cover along the right side.
2. At the far corner, sprint left toward the elevator. Turrets will fire — you should survive the dash if you are at full health.
3. Take the elevator to the upper floor.
4. Two snipers are positioned at the far end. Use pillars and kitchen counters as cover. Advance methodically.
5. The masked sniper (the one with face covering) hits harder — prioritize them. An Electro-Thrower works well at close range.
6. Past the snipers, follow the hallway with dead bodies. Climb the stacked suitcases at the end.
7. At the top: the security system reset button. Press it. The turrets below shut down permanently.

What the Reset Unlocks

• The live-fire turret zone is now safe to traverse freely
• Access to Anteverse Gel crafting material
• Opens the path toward Tier 4 Keypad Hacker (requires components from Canaan portal in Wildlife Pens)
• Security Sector becomes accessible for the next stage of progression

Common Deaths and How to Avoid Them

See Also

• Leyak, Phantom, and X-Ray Lamp guide
• Security Level 4: Containment Run
• Night Realm walkthrough
• All bosses and enemies guide