Everything you need to know to survive longer in the new game mode

Endless Shift is a new game mode in FBC: Firebreak that challenges you and your squad to survive for as long as possible against escalating waves of enemies. Every run is different, every build is earned on the fly, and no two Shifts ever play out the same. 

This guide walks you through how Endless Shift works, from combat basics to upgrades, power-ups, and long-term progression. 

What Is Endless Shift? 

At its core, Endless Shift is a wave-based arena survival mode. You’re dropped into a sealed section of the Oldest House and tasked with holding the line against increasingly dangerous Hiss forces. 

Between waves, you’ll spend earned Corruption to upgrade your gear, unlock powerful Enhancements, and shape your build as you push deeper into the Shift. 

Survive as long as you can. When the team goes down, the Shift ends.

Combat Basics 

Each Endless Shift run takes place in a closed arena designed for constant pressure and limited resources. 

  • Enemies arrive in waves that grow harder over time 

  • Later waves introduce new enemy types, Corrupted Items, and Powerful Enemies 

  • Resources are scarce: 

  • Only one healing shower, with limited uses 

  • No ammo dispensaries - ammo can only drop from enemies 

  • Players can be downed and revived during a wave 

  • If a downed player bleeds out, they’re out for the rest of that run 

  • If at least one teammate survives the wave, fallen players respawn at the start of the next round 

Team coordination and positioning become more important the longer your Shift lasts. 

Corruption: Your Key Resource 

Every enemy you defeat drops Corruption, the currency used to power your build. 

  • Different enemies drop different amounts 

  • Corruption must be collected before the wave ends, or it’s lost 

  • Collected Corruption is shared across the team 

  • Each player spends their share individually 

Smart movement and quick decisions matter. Leaving Corruption behind can cost you crucial upgrades. 

The Shop & Upgrades 

After each wave, you’ll enter the shop phase, where your build starts to take shape. 

Each player is offered three randomized choices, which can include: 

  • Enhancements (passive upgrades) 

  • Tools 

  • Neutralizers 

  • Grenades 

  • Weapons 

Enhancements come in different forms: 

  • Unique – powerful upgrades that can only be acquired once 

  • Leveled – upgrades that scale from Level 1 to 5 

  • Stackable – single-level upgrades that can be picked multiple times 

You can reroll your choices for a Corruption cost, but each reroll becomes more expensive. Once everyone has locked in their selection (or the timer runs out), the next wave begins. 

Unspent Corruption carries over between waves, but once the run ends, it resets. 

Weapons in Endless Shift 

Endless Shift uses familiar weapons from FBC: Firebreak, but they’re introduced gradually as the difficulty increases. 

  • Round 1: You start with SMG, Double Barrel Shotgun, or Revolver 

  • Round 9: You can choose Machine Gun, Bolt-action Rifle, or Pump-action Shotgun 

  • Round 19: You can choose Scattergun, Rotary Cannon, or Semi-Automatic Rifle 

You’re never forced to switch - sticking with a weapon that fits your build is always an option. 

Power-Ups 

Strong and Powerful enemies have a chance to drop Power-Ups during combat. These appear in the arena and can be picked up at any time. 

Power-Ups include: 

  • Vacuum – instantly collects all Corruption on the ground 

  • Nuke – wipes out weaker enemies and heavily damages stronger ones 

  • Torch – sets all enemies ablaze 

  • Snowflake – freezes all enemies 

  • Healing Cell – heals the entire team 

Power-Ups persist until picked up, letting you save them for the perfect moment. Some Enhancements can further amplify their effects.  

Rewards & Progression

When your Endless Shift run ends, you’ll be presented with a progression screen that permanently expands what’s possible in future runs. 

  • The number of waves you completed determines how many Enhancement boxes you access to – but you can only choose to open one 

  • Unlocking Enhancements increases the variety of upgrades that can appear in future shops 

  • Each Enchantment box has its own fixed content, the contents are not randomized 

  • A separate Milestone Track progresses simply by playing Endless Shift, unlocking new Enhancements and cosmetics 

There’s also a twist: 

After each run, some Enhancements you used may linger. When you jump into a Crisis job afterward, one of these Enhancements can activate for that session - connecting Endless Shift directly to the core Firebreak experience. 

You can see how many and what Enhancements you have lingering in the menu in the bottom right corner of screen when choosing a Crisis. 

One More Shift… 

Endless Shift is all about experimentation, risk, and pushing your limits. Some runs will end quickly. Others might turn you into something unstoppable - until they don’t. 

Grab your squad, adapt on the fly, and see how long you can last. 

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