Gotham Knights features familiar heroes and villains, including the sub-zero doctor turned supervillain, Mr. Freeze. Since Batman's untimely demise, criminals have been bolder while terrorizing Gotham's streets, and Mr. Freeze is one of the secondary bosses players will encounter. Batman was responsible for funding his research on curing his frozen state of being to assist him with his ultimate goal of reuniting with his wife. With Batman gone, he is back and more villainous than ever.
His storyline starts reasonably early in the gameplay and occurs throughout six missions. However, subcase 1.3 in Mr. Freeze's villain case could cause players trouble whenever they reach the vault in Quartz Lab. This guide goes over how to enter Quartz Lab and open the vault in Gotham Knights.
Enter Quartz Lab
Mr. Freeze is at large in Gotham City, so it is up to the Knights to shut down his operations. The first two missions lead players to Quartz Lab after getting intel on Freeze's next move. The recommended level to complete this mission is from 6-9. Access and launch the mission from the Batcomputer to automatically transport to Quartz Lab to find a way in and investigate Mr. Freeze's operation. Players will spawn on the building across the street from the lab, where they can see a group of Regulators guarding the entrance.
Take out the rooftop snipers first to avoid being seen and taking projectile damage when engaging the enemies on the ground.
When all the guards are defeated, players can enter the building through a crack in the door and make their way inside Quartz Lab to find the main lab area. The doors are locked, so the only option is to jump inside an air duct a small distance past the entrance. It leads straight to the lab and gives the hero an excellent advantage of sitting on the pipes above the lab. There are six Regulators that must be taken out before continuing the mission. Knocking them all out using Silent Takedowns is possible if players want to avoid an all-out brawl and gain the bonus objective.
Open the Vault
After all the guards are down, there is a loud knocking sound from the vault, and players are prompted to find a way to open the vault door. Unfortunately, there isn't much guidance on how to do this, but a simple scan around the room will light up the vault release console yellow if it's in the line of sight.
The vault release console is on the middle level of the lab on the computer desk across from the staircase. The hero will note a dead scientist next to it. Scan the release console to unlock the activation option, but be prepared to fight because two Shockers will run out immediately when the vault door lifts. They can efficiently be dealt with by using Momentum Abilities and heavy attacks.
Search for Clues
The next step will be to scan the frozen scientist in the middle of the vault, revealed to be Dr. Theodore Upshot, who worked closely with Mr. Freeze. The mission objective updates to search for the three clues in the vault; the clues can be revealed using AR scanning.
Dictaphone
The first clue is a Dictaphone that Dr. Upshot used to record voice notes. The last recording is him worrying about his part in the unstable and dangerous machine they built. He continues to say that he made a disruptor, or failsafe, for the device despite his fearing Mr. Freeze.
Blueprint
The second clue is a ripped blueprint on the wall to the left of the vault entrance above the computer. There need to be more schematics left to make out the details, but it seems to be blueprints for the machine Freeze and Dr. Upshot are building.
Notepad
The third and final clue is right next to the frozen scientist. It's a small notepad labeled as Dr. Upshot's with an entry about the failsafe for Freeze's machine. Dr. Upshot wrote that he was scared Freeze would find out about the failsafe, so he hid it in his office.
With all the clues gathered, players must find Dr. Upshot's office and locate the disruptor. His office door is on the third level of the lab, inside an observation room of sorts. Enter the room and use the security keypad on the door to Dr. Upshot's office. Once inside the office, go around the desk and use the AR Scanner. Doing this reveals the hidden compartment in the floor, and players can secure the disrupter to complete the mission.
Gotham Knights is available now on PS5, Xbox Series X/S, and PC.