Lights Out Chapter 2: Full Walkthrough for All 18 Fuses (Roblox)
Every key, tool, portal, and generator reset needed to power the exit door and escape before the reactor blows.
Every key, tool, portal, and generator reset needed to power the exit door and escape before the reactor blows.
by Pallav Pathak
Chapter 2 of the Roblox horror game Lights Out drops you into a dark research facility with one goal: gather 18 fuses to power the exit door, then trigger the reactor’s self-destruct and escape. Along the way, you collect colored keys, tools, and two portal-only items while dodging a tall, black, long-limbed monster that hunts you whenever the lights die.
Quick answer: Collect all 18 fuses by unlocking the blue, red, pink, orange, teal, green, white, and yellow doors in order, clearing the Ice and Laser dimension obbies, and resetting the generator during both blackouts. Put out the fire on the “18 REQUIRED” exit door with the fire extinguisher, press the red button in the Control Room, then run to the stairwell elevator before the 60-second countdown ends.
Image credit: Roblox
Core rules: fuses, keys, and the monster
The fuse counter sits at the top of the screen and starts at 0/18. Every fuse you grab bumps it up and shows a short prompt, such as “A fuse! (1/18) An even better power source…”. You cannot open the final exit until all 18 are collected.
Doors are gated by matching colored keys or a keycard. Behind most doors is either a fuse, a tool, or the next key you need, so the route is essentially a chain: each unlock feeds into the next.
Note: The tall black monster patrols the corridors and the grassy “Dangerous Anomaly” area. It cannot be fought. Keep moving and run past it when it blocks a hallway.
Image credit: Roblox
Key and tool order
This table shows what each door holds so you always know the next step. Follow it top to bottom.
In the grass, find the pink key and Fuse #3 while keeping distance from the monster. Open the pink door for the wooden plank, then head back to the main facility.
Return to the Laser Dimension and use the crowbar to break the wooden planks over the table. Take the fire extinguisher and the final Fuse #18. The prompt confirms it: “A fuse! (18/18) That’s all of them!”
Head to the “18 REQUIRED” exit door. A fire blocks it, so use the fire extinguisher to put it out. The prompt reads “The fire is put out! The way to the exit is clear!”
Run straight to the stairwell and take the elevator out before the timer hits zero. The chapter ends as the facility blows, with a “Chapter 3 coming soon…” teaser.
Image credit: Roblox / Roblox Master Guides
You know you finished correctly when the fuse counter reads 18/18, the exit door opens after the fire clears, and the escape cutscene plays confirming you stopped the monster’s infestation. If the exit stays locked, you are still missing a fuse. Retrace the floors and any dimension you skipped, since two of the fuses live only inside the Ice and Laser obbies.
