This page of our Gears 5 guide contains a walkthrough for Dirtier Little Secret.
Kait and Del go under the glacier in search of a hidden research facility at the foot of mount Kadar. Chapter 5 of the second act of Gears 5 begins with a slide to the underground ice cave. Move straight. Laser turrets are guarding the entrance to the Kadar facility. Get in their reach and you are dead.
Go to the room on the right side. Inside, you will find a generator. Use Jack's shock trap to disable the device. You have managed to neutralize one turret.
Go through the first lasers, then use the cloaking device and run into the building. Inside, you will find one component and a second generator, which should be neutralized in the same way as the previous one. Go to the Kadar center.
Mount Kadar - Secret lab
Follow Niles. You now need to take care of cryogenic leaks so you can move on. Go up the ramp. In the room, you will find one component.
The generator is a little bit further - disable it with a shock trap. Go back to Niles and follow him.
Along the way, you will find one more component. Collect it and continue your exploration of the facility.
You have to deal with another leak of cryogenic liquid. You must use the shield to safely move to the other side. There is also one component in the room. You can get it while you are protected by the shield.
The generator is behind the room. You will also find a collectible - Lexigram Board.
Unfortunately, Niles deceived you - find a way to escape from the research facility. Follow him. Use the protective shield and enter the room. Select the door on the right and break the ice blocking the passage.
Enter the next room. The corpse of real Niles is near the console. Use his palm to log in and disable the lock. Don't forget to take the component lying nearby.
Get the collectible lying on the desk - Subject Analysis: EV-194-9.
Sketchbook, another collectible, is in the adjacent dark room.
In the next room, you have to fight with several opponents released from the pods. You shouldn't have problems defeating them.
Destroy the generator to neutralize the turrets with cryogenic liquid. It is worth noting the fact that you can collect weapons from frozen characters.
The next doors are closed. You have to find a way to open them. Look at the ventilation shaft and send Jack there.
More enemies will wake up. Jack needs time to open the doors - use this time to practice shooting.
During a further walk through the research center, pay special attention to the creatures with extra legs on their back. Try to keep them at a distance and don't let them jump towards you.
Destroy the generator behind the cryogenic turrets on the right (where the demon ran).
Soon, you will face a boss. Ask Jack to open the door and enter a large, frozen room.
This boss fight is very schematic and requires a bit of patience. The enemy is blind which means that you have to lure him with a sound - shoot your weapon. Stand on the other side of the frozen pond and get the demon's attention. When he starts to charge towards you, shoot at the ground beneath his feet.
The monster will fall into the water and freeze for a while. This is the best moment to go around him and shoot the weak spot on the back. Keep doing this until the boss is dead. You have to watch for two attacks - a spike throw and a leap. Dodge at the right time and you will quickly defeat the enemy.