Back 4 Blood Guide | How To Unlock All Characters & Cards
Get the strongest Cleaners and card combos early so you can crush every campaign run in Back 4 Blood.
Game Guide by Faviyan Mustafiz on Dec 06, 2025
Back 4 Blood gives you a fast, chaotic co-op campaign, but the real power comes from unlocked characters, cards, and Supply Lines. If you know what to focus on, you can unlock the best stuff quickly and set up builds that feel almost broken.
This guide shows you how to unlock every Cleaner, how Supply Lines work, which cards to chase first, and how to pick the right difficulty so you can breeze through harder runs later.
How To Unlock All Characters In Back 4 Blood
If you are wondering how to unlock all the Cleaners in Back 4 Blood, the process is simple. You need to beat Act 1’s final mission, The Crossing. Once you clear The Crossing for the first time, you unlock the rest of the characters automatically when you return to Fort Hope.
You may end up trying all the Cleaners, but there is a good chance you stick with Mom. Mom is extremely strong and very forgiving for a team that is still learning the game. Her support tools and clutch saves make many early runs much smoother, so do not be surprised if Mom becomes your main Cleaner for a long time.
How Supply Lines Work And How To Unlock Cards
To unlock powerful cards, you need to progress through Supply Lines. These are progression tracks that you buy into using the currency you earn by playing the story.
As you clear missions and play through the campaign, you earn Supply Points. You then spend those points at Supply Lines to claim cards, cosmetics, and other rewards.
If you want a very strong early card, look for the card that lets you equip a primary weapon in your secondary slot. In game, this card is called Two Is One And One Is None.
With Two Is One And One Is None, you can run two primary weapons at the same time. For example, you can carry two LMGs, or an AR and a shotgun, and swap between them instead of reloading.
To get Two Is One And One Is None quickly, focus on the very first Supply Line in the hub. Run that first Supply Line several times in a row. After you complete it around four times, you should have enough Supply Points and progress in that line to pick up the card and start building around it.
As you continue the story, you unlock more Supply Lines. Each one opens up new cards for your decks. Because you keep earning currency as you play, you can eventually redeem every node on each Supply Line, giving you a huge pool of cards and many different builds to experiment with.
Best Difficulty To Start Your Campaign On
When it comes to difficulty, it is better to start smart instead of proud. The best way to play your first long campaign is on Recruit. Recruit lets you learn maps, enemy types, and corruption cards without turning every mistake into a wipe.
You can try higher difficulties right away, but “hard” modes demand a four-person team with strong coordination and well-built decks. Without that, the game can feel punishing very quickly. Starting on Recruit lets you clear the campaign, unlock more cards, and test different builds.
Once you finally beat Recruit and pick up a good set of cards, you can move up to the next difficulty. At that point, you come into harder runs already stacked with bonuses that boost your damage, survivability, and utility.
With a full deck of strong cards, you feel much more powerful and less dependent on perfect play from every teammate.
Damage Cards And Powerful Weapon Combos
Back 4 Blood is full of damage-focused cards that change how you handle weapons. Some cards let you run two primary weapons. Others supercharge reload speed or let you ignore ammo issues on your secondary. When you combine these cards, you get extremely strong, almost “roguelike” builds that shred through Ridden.
One key combo is built around Two Is One And One Is None. With this card active, you carry two primary weapons instead of a primary and a sidearm.
Pair this with the card Admin Reload, which reloads your weapon when you stow it. With Admin Reload, every time you swap weapons, the gun you holster reloads automatically in the background.
This combo lets you play in a simple loop. Empty the magazine of your first primary weapon, swap to your second primary, and keep firing.
By the time you are done with the second gun, the first one is already reloaded because of Admin Reload. You barely need to press the reload button, and your damage output stays high almost all the time.
There is also a card that turns your sidearm into a never-ending backup weapon. This card is called Ammo Stash, and it gives your secondary weapon unlimited ammo.
When you combine Ammo Stash with Two Is One And One Is None, you can carry two primaries plus a secondary that never runs dry. You get massive sustained damage and a safety net if your team is starved for ammo crates during a mission.
Why The Card System Feels Like A Roguelike
The card system in Back 4 Blood gives the game a strong roguelike feel. Each run starts with a base deck, and every map you clear adds another card to your active stack. Damage cards, reload cards, and utility cards stack together until your Cleaner feels wildly powerful.
With cards like Two Is One And One Is None, Admin Reload, and Ammo Stash, you can push the game into a very deep endgame.
You can build decks that focus on running two primary weapons, decks that never stop shooting because of reload tricks, or decks that treat your secondary weapon as a limitless damage source.
There are many possibilities and a lot of potential for creative builds that let you run through levels in ways that feel unique each time.
As you unlock more cards through Supply Lines and farm Recruit difficulty to flesh out your deck, you set yourself up for long-term success. With enough cards and a bit of planning, you can turn every campaign into a fast, aggressive run where your Cleaner feels stronger with every map you complete.
Also, check our Back 4 Blood Xbox Series X Review and other guides below:
Contributor, NoobFeed
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