The Backrooms With Guns Supercell Boss: Fight Guide

Prepare for a 20,000-HP Boss

The Backrooms With Guns supercell boss is a massive dark cloud that attacks with powerful lightning. Found in Penthouses, this boss variant of the Squall has 20,000 HP and can knock you down with its strikes. Prepare for a sustained fight against a target moving through the sky.

Your game mode changes how you manage the encounter:

Mode	Combat format	Health and ammo
Classic	PvE	Infinite health and ammo
Survival	PvE	Limited health and ammo

In Survival, check your ammunition before completing the summon requirement. The boss has a large health pool, so leave yourself enough ammunition for the encounter after fighting the Squalls.

The Railgun deals 300 damage per shot, and its game pass costs 44 Robux. If you use it, focus on landing consistent hits on the cloud. Supercell has no head to target, so headshots provide no damage advantage.

Official page: The Backrooms With Guns (roblox.com)

How to Summon Supercell in Penthouses

The summon requirement is 25 Squall kills. Use the TV inside the house to track the kill count rather than keeping a separate tally.

Image: Roblox / Floridoit

1. Enter Penthouses.
2. Kill Squalls and monitor the counter on the TV inside the house.
3. Reach 25 Squall kills to trigger the storm warning.
4. Watch for the TV’s EAS severe-thunderstorm alert, followed by a loud siren and the sky turning black.

The warning sequence signals the boss’s arrival. Finish your preparation before reaching the kill requirement so you can turn your attention to the sky when the storm begins.

Lightning Attacks and Where to Aim

Supercell moves through the sky relatively slowly and attacks with strong lightning bolts. Its attacks deal heavy damage and can knock you down, making each hit especially costly when playing Survival.

Keep these priorities in mind during the fight:

• Track the cloud’s movement. Follow its slow flight so you can keep your shots on target.
• Aim at the cloud itself. There is no headshot weak point to search for.
• Reacquire your target after a knockdown. Get your aim back on the boss before spending more ammunition.
• Manage ammunition in Survival. Keep your shots deliberate against its 20,000-HP health pool.

The attack pattern is straightforward, but the damage makes it dangerous. Keep watching the airborne target, land your shots consistently, and recover your aim whenever lightning interrupts your fire.