How to Complete the Kortz Center Heist Solo on Hard Mode Using the Sewer Approach

This Sewer Entrance route completed the Kortz Center Heist solo on Hard Mode in 14:59 while meeting all four Elite Challenge conditions. It uses the Hazmat Suit, Street Loadout and Manchez before taking a tested path through the maze, sewer tunnels, basement and the most difficult laser pattern we encountered.

That pattern has a bottom horizontal laser running the full length of the room. The route below shows where to stand and how to use a sideways jump to clear it consistently.

The Elite Challenge Requirements

To earn the Elite Challenge bonus, you have to meet all four conditions in the same run.

On Hard Mode, both the buyer's request bonus and the Elite Challenge bonus pay GTA$100,000 each, which is double what they pay on Normal.

The Buyer's Request Problem

Before committing to an Elite Challenge run, you need to understand the buyer's request list, because it is decided by RNG during scope out and it can make a solo Elite Challenge impossible.

One of the Elite Challenge requirements is looting every item on the buyer's request list. If any of those items spawn inside the Crisp Gallery on the upper floor of the exhibition room, a solo player cannot reach them. That gallery requires two players, since one has to hold the shutter door open while the other loots. As long as your requested items land anywhere else, you are good to go solo.

You can finish the heist without the Elite Challenge, or call Raf to cancel it and pay GTA$100,000 to set up another run.

Setup

Entry Point

To unlock the Sewer entry point, head to the maze by the Kortz Center parking lot during scope out, go to the centre, and photograph the manhole. Send it to Raf and it registers as a scoped entry point.

The Manhole Key

This is the part people miss. You also need to find the manhole key, because without it you cannot open the manhole. You can grab it during the finale, but that costs you significant time. There are five possible spawn locations around the Kortz Center and it is random every run, so it is worth learning all five. We have mapped out every one of them in our Kortz Center Scope Out guide, so check that if you want to know exactly where to look.

Infiltration Gear

The Hazmat Suit infiltration gear is required for the Sewer route. During the Hazmat Suit prep, there is an important extra step. Before stealing the suit, go to the camera icon on the map and steal the sewer tunnel blueprints. With the blueprints, Raf will tell you exactly which tunnels to take to reach the ladder up to the maintenance room, which saves a lot of time underground.

Also, turn on subtitles from the settings. Raf calls out the tunnel directions once, and they are easy to forget. Subtitles let you read and memorize the route. The tunnel path is randomized each run. You can review the directions in the dialogue log if you miss them, but that wastes time, so subtitles are the better solution.

Weapon Loadout

Choose the Street Loadout. If your Mansion has the Armory, the finale also supplies a Pump Shotgun Mk II that can down fully armoured guards with one torso shot. That makes the 90% accuracy requirement easier to protect.

The Security Loadout gives you a Marksman Rifle Mk II and a Stun Gun. Guards stunned before the vault can return after you take the Primary Target, creating more work on the way out. If you rely on the suppressed pistol instead, complete Guard Shipments so the guards are not wearing helmets and can be eliminated with one headshot.

Getaway Vehicle

Choose the Manchez. Its manoeuvrability suits the off-road escape used in this route.

Then complete the mandatory Access Code and Hacking Device equipment missions.

Optional Prep Work

Guard Shipments and Guard Routes are the two to prioritize. Guard Shipments is especially important if you chose the Security loadout, since it removes guard helmets and lets your suppressed pistol land one-shot headshots. Guard Routes shows every guard's position and field of vision.

Glass Cutter is situational. You only need it if one of your buyer's request items is inside a vertical glass display case. Otherwise skip it, along with Power Drills and EMP Charges.

The Finale Walkthrough

The Drive

When the heist starts, grab a bike to reach the Kortz Center. Any bike works, though a fast one like an upgraded Hakuchou Drag helps. Jump the small cliff to skip the turn and land on the main road, then keep driving towards the Kortz Center.

As you pass the toll, go left onto the grassy mountain and come around the left side of the building. Do not get too close to the boundary, as the sound of your vehicle alerts the guards. Stay outside the perimeter and watch the minimap for nearby guards and vision cones. If a guard appears close to your route, move farther from the boundary before continuing. Park on the left side of the Kortz Center and run up to the maze.

Navigating the Maze

Run up to the maze and find the second light post. It has a tree beside it, and the two line up with the satellite dish in the distance. That light post is your entry point. Jump the hedge into the maze.

From there, skip the first left and take the second left.

Go straight and turn right.

Continue straight across the maze until the hedge blocks you, then take the opening on your left.

The manhole is there.

The Sewer Tunnels

With the blueprints, Raf tells you the route using a number and letter for each room and tunnel. For example, "2B" means once you are in room or opening 2, take tunnel B. Each tunnel opening has its letter written above it.

Follow Raf's directions and you will reach the ladder up to the maintenance room. In the final room, the small tunnel leading up is hard to miss.

Once in the maintenance room, interact with the trash bin by the door to change your outfit. Now you are ready to clear the basement.

The Basement

After that, go into stealth stance and exit the maintenance room. First, take out the guard on your left, then the second guard just ahead of him leaning on the wall. A guard can also appear to the right of the maintenance-room door, inside the corridor guard's field of vision. If he is there, eliminate the two guards on the left first, move forward along the left wall, and approach the right-side guard from beside the CCTV window.

Look through the window into the CCTV server room and take out the guard inside. The glass is not bulletproof.

There is a guard at the end of the corridor being watched by another guard. Wait for the watcher to move, take out the corridor guard, then quickly move up and take out the watcher.

Turn around and take out the guard at the keypad. This is the same guard that sometimes appears on your right on exit.

Wait for the guard inside the Security Control Room to step out on the right, and take him out through the window.

Once you're done clearing the basement, you need to enter the CCTV Server Room. One of the three server room keypads will be lit green. That is the one you can hack. Match the fingerprint pattern on the right by selecting the four square grids on the left. On Hard Mode you complete this three times.

Once hacked, use the computer to disable the CCTV cameras, then enter the Security Control Room and input the access code Raf sent you to open the security door to the laser room.

The Most Difficult Laser Pattern We Encountered

This Hard Mode pattern adds a bottom horizontal laser that runs the full length of the room, so the route requires a jump.

In our testing, jumping sideways while facing left gave the character model enough clearance. Facing right repeatedly clipped the lower beam and triggered detection.

Stand in the middle of the opening and face left. Wait until the lower beam reaches your feet, jump sideways, then turn toward the next switch after landing.

Now, for the entire laser room and how to pass through it. Go to the left side of the room. Wait for the bottom laser to disappear, then wait for an opening between the vertical lasers, run to the switch, disable it, and run back out.

After that, hug the right wall and move forward, but do not pass the two vertical lasers ahead. Ignore claims of a guaranteed safe zone on the far right, as the lasers can still catch you there.

Three horizontal lasers will approach and vanish where the second section ends, but the bottom laser keeps coming across the whole room.

Face left, wait for the bottom laser, and jump as it nears.

As you land, move quickly to the second switch, as the horizontal lasers return fast. If you have already started the switch interaction, the lasers appearing during the animation will not detect you and the switch still disables.

Wait for the main middle laser to pass, then move through the opening in the vertically swinging lasers and stand in the middle, facing left.

Jump the next bottom laser, then run through the opening on your left. You will have time before the next set of vertical lasers. Hit the final switch to disable the section.

The Vault

Now you need to hack the vault door. The vault door hack is a memory minigame. Watch the pattern the nodes light up in, then repeat the final pattern back.

Memorise the first few nodes, then use AI Scramble to replay the pattern before finishing the rest. On Hard Mode you complete this four times, and the full six-by-five grid is used for the pattern, so there is more to track than on Normal.

Once the vault door opens, go straight to the primary target and loot it. Watch the vault thermal sensor progress bar in the bottom right of the screen. It detects your presence, so loot and leave before it fills or it triggers the alarm. If one of your buyer's request items is inside the vault, grab it while you are here.

Once you have the Primary Target, return to the CCTV server room and use the same computer to wipe the vault footage. This removes evidence of the painting swap; it does not guarantee a Getaway Vehicle Payment. Disable the cameras again before leaving.

Returning Upstairs

After that, exit through the door on your left, turn right, go down the corridor, turn left, and head to the elevator at the end.

Hack the elevator keypad by hitting the prompt when the highlighted white block passes through the red line in the middle. Once hacked, ride it up to the ground floor.

Regardless of where your remaining items are, you always go to the ground floor first, since that is where you disable the cabinet security alarm before looting.

Exhibition Room

When you reach the ground floor, go through the double doors and look left. Take out the guard by the tiger statue, and watch the ground for the exhibition room exit key. Any guard in the area can drop it, and you need it to escape, so check after each kill.

Look right and take out the next guard once he settles into position. He sometimes drifts right into the moving camera's field of vision, so time it carefully. Take him out when he is in the position shown in the image below.

Take out the guard leaning on the rail from the side, not head-on, or he can drop over the rail into the camera below.

Head down the stairs, take out the guard behind the security desk about halfway down, then jump off and disable the cabinet alarm.

Once the alarm has been disabled, you can start collecting your buyer's request item and any secondary loot needed to fill your bag.

If an item is on the upper floor, head up in stealth, aiming down sights to move slightly faster.

Take out the two guards at the top, plus the one leaning on the rail at the end of the balcony. Cross a camera's view quickly if you cannot avoid it, and do not stop inside its vision cone. Fill any remaining bag space with additional loot.

Escaping

Head back downstairs. You can jump down to save time, but be extremely careful of the camera, as dropping into its field of vision ends the run. Return to the door by the security desk and exit.

Once you're outside, take out the guard ahead of you. There is a camera on your right, so stick close to the right wall, run to the ledge, and jump down.

Drop into stealth and aim down sights around the corner, as a guard sometimes watches the Manchez. If clear, get on the bike.

Head off-road directly ahead, staying out of the police fields of vision, especially the helicopters. Once past the helicopter, get on the road towards the drop-off. Do not try to hide, as you lose the cops automatically. Just avoid driving into them, watch your minimap, and take a detour if they move into your path.

Once you have shaken them, drive to the drop-off as fast as possible to complete the heist.

Hard Mode Result

This solo run finished in 14:59. I, Fruit paid GTA$1,372,800 as the first Primary Target sale after the weekly reset. GTA$223,638 in Secondary Targets, GTA$100,000 for the Buyer's Request and GTA$100,000 for the Elite Challenge brought the final take to GTA$1,796,438. The result screen showed no Getaway Vehicle Payment.

See the complete Kortz Center payout guide for every confirmed painting value, bonus and planning-fee rule.

For every other part of the job, including the full scope-out and prep missions, use our Kortz Center Heist hub. To come in a different way, follow our Skylight approach solo Elite Challenge walkthrough or the Normal difficulty Staff Entrance walkthrough.

For the money side, see the Kortz Center Heist payout guide or enter your own target, loot, and weekly state in the Heist Earnings Calculator.