Back 4 Blood is Turtle Rock's four player co-op shooter about eight Cleaners holding out against the Ridden from a base called Fort Hope. The campaign runs 33 missions across four Acts and ten chapters, and the part that separates it from the studio's earlier work is the card layer: you bring a 15 card deck, draw one card between levels, and the game's Director answers with Corruption Cards that change the level you are about to play. Difficulty runs Recruit, Veteran, Nightmare and No Hope, and by Nightmare a deck that does not match your role is the reason runs end.
This guide covers everything you need: core mechanics, the best characters, weapons worth investing in, location progression, and the tips that actually make a difference.
Core Mechanics
Fifteen card decks
A deck holds up to 15 cards and is drawn in the order you set, not shuffled. You pick one card at the start of each level and keep it for the rest of the run, so the top of the deck is the part that shapes almost every level you play. Cards that fix a weakness, like Combat Knife turning a weak punch into a strong knife, belong near the top rather than saved for later.
Corruption Cards
The Director draws Corruption Cards before each level, and they alter the rules rather than just the numbers: extra special Ridden, fog, mutations, timed objectives and hazards. They are visible before the level starts, which makes them a briefing rather than an ambush, and a team that reads them can change loadout at the safe room shop first.
Trauma damage
A portion of the damage you take becomes Trauma, which caps your maximum health for the rest of the level and is not restored by ordinary healing. Fresh Bandage clears 10 Trauma at the start of a level and Doc's team bonus grants +25% Team Trauma Resistance, which is why avoiding damage matters more than healing it.
Copper and safe room buys
Copper is picked up during levels and spent in the safe room on attachments, healing, ammo and team upgrades. Hazard Pay pays a lump sum at the start of every level, and because copper does not carry usefully into a wipe, spending it before the next level rather than hoarding it is the correct habit.
Special Ridden and hordes
Common Ridden come in waves, while specials arrive individually and demand specific answers. Alarms, car horns, birds and doors all trigger hordes, so route discipline through a level does more for survival than raw damage output, and a horde called at the wrong moment turns a manageable special into a wipe.
For a deeper dive into how these systems interact, see our Back 4 Blood combat guide.
Characters Overview
| Role | Tier | Playstyle | Key Stats |
|---|---|---|---|
| Walker | A | Versatile approach | Balanced stats |
| Holly | A | Versatile approach | Balanced stats |
| Doc | A | Versatile approach | Balanced stats |
| Mom | A | Versatile approach | Balanced stats |
| Jim | A | Versatile approach | Balanced stats |
For full build breakdowns with gear and stat priorities, see our Back 4 Blood builds guide. For rankings, check the tier list.
Weapons Guide
| Weapon | Why It Matters | Best For |
|---|---|---|
| AA12 | A fully automatic shotgun and the strongest close range answer in the game. | Shotgun decks running Rolling Thunder, and any Cleaner assigned to hold a chokepoint. |
| M249 | A light machine gun with the magazine capacity to fight a full horde without a reload window. | Holdout objectives and horde events, especially with a teammate covering specials. |
| Phoenix 350L | A sniper rifle that kills most specials with a single weak point hit. | Marksman decks and any level where a Corruption Card has stacked extra specials. |
| Ranch Rifle | A semi-automatic rifle with good accuracy and manageable recoil, which makes it the practical middle option between an assault rifle and a sniper. | Players who want precision damage without giving up close range viability. |
| Uzi | A submachine gun with a high rate of fire and light SMG ammo that is rarely contested by the rest of the team. | Second weapon slots under Two Is One and One Is None, and support players conserving heavy ammo. |
AA12: A fully automatic shotgun and the strongest close range answer in the game. It clears a doorway of common Ridden in one burst and it stops a Tallboy that reached the team, at the cost of eating ammo faster than the safe room can refill it.
M249: A light machine gun with the magazine capacity to fight a full horde without a reload window. It is heavy and slow to aim, which makes it a horde weapon rather than a special-killing one.
Phoenix 350L: A sniper rifle that kills most specials with a single weak point hit. Paired with Ridden Slayer and Jim's weak spot bonus it removes a Hag or a Snitch before either becomes a problem for the team.
Ranch Rifle: A semi-automatic rifle with good accuracy and manageable recoil, which makes it the practical middle option between an assault rifle and a sniper. It is generous with ammo, so it holds up on levels that punish overspending.
Uzi: A submachine gun with a high rate of fire and light SMG ammo that is rarely contested by the rest of the team. Weak per shot, so it works as a secondary alongside a sniper rather than as a primary on Nightmare.
Full breakdowns in our Back 4 Blood weapons guide.
Location Progression
| Location | Level Range | Key Rewards |
|---|---|---|
| Fort Hope | Between runs, all difficulties | Card unlocks via supply lines, deck building, Cleaner selection |
| Act 1: The Devil's Return | Recruit to Veteran, 13 missions | Early supply points, first full deck, Ridden identification |
| Act 2: The Armory | Veteran, 10 missions | Mid tier cards, weapon attachment access, copper discipline |
| Act 3: Dr. Rogers Neighborhood | Veteran to Nightmare, 9 missions | Late campaign cards, Nightmare preparation |
| Act 4: The Abomination | Nightmare and No Hope, 1 mission | Campaign completion, highest supply point payouts |
Fort Hope: The hub between runs, where decks are built, supply lines are spent and cards are unlocked. Time spent here decides whether Veteran is playable, since an unbuilt deck is the single biggest reason early runs stall.
Act 1: The Devil's Return: Thirteen missions across four chapters, The Devil's Return, Search and Rescue, The Dark Before the Dawn and Blue Dog Hollow. It teaches special Ridden one at a time and is where a first deck gets tested.
Act 2: The Armory: Ten missions across The Armory, Plan B and Job 10:22. Corruption Cards start stacking meaningfully here and the objectives run longer, which punishes teams that spent all their copper on attachments and none on healing.
Act 3: Dr. Rogers Neighborhood: Nine missions across Dr. Rogers Neighborhood and Remnants, including the T-5 level. This is where a deck built for the wrong role stops working and role coverage across all four Cleaners becomes mandatory.
Act 4: The Abomination: A single long mission and the campaign's boss encounter. It is one level rather than a chapter, so the whole run is decided by the cards drawn across the previous 32 missions.
See our maps & locations guide for detailed area breakdowns and our walkthrough for the optimal progression path.
Tips That Actually Matter
- Deck order matters more than deck contents because cards are drawn in the order you set, never shuffled. Put Combat Knife, Cross Trainers or whatever fixes your biggest weakness in the first three slots, since a card at position 14 arrives in Act 3 at best.
- Read the Corruption Cards in the safe room before you leave it. They are shown ahead of time, so a level stacked with Reekers is a reason to buy explosive resistance and a different weapon rather than a surprise halfway through.
- Trauma caps maximum health for the level and normal healing does not clear it. Fresh Bandage removes 10 Trauma at the start of each level and Doc supplies +25% Team Trauma Resistance, but the reliable fix is not taking the chip damage in the first place.
- Spend every piece of copper before the level starts. Copper carried into a wipe is wasted, and team upgrades bought at the safe room apply to all four Cleaners while a personal attachment applies to one.
- Assign team bonuses deliberately across the four Cleaners. Walker gives +10 Team Health, Holly +20 Team Stamina, Evangelo +5% Team Move Speed, Mom one extra Team Life, Doc +25% Team Trauma Resistance, Hoffman team ammo capacity, Karlee team use speed and Jim team weak spot damage.
- Alarms, car horns and birds call hordes, and a horde arriving on top of a Tallboy is what actually wipes teams. Slow movement through cluttered areas costs less than the ammunition a triggered horde consumes.
- Two Is One and One Is None lets a Cleaner carry two primaries, which is how a marksman keeps a Phoenix 350L for specials and an Uzi for anything that closes. The tradeoff is swap speed, so practise the swap rather than reloading under pressure.
- Hoffman spawns ammo on kills and his team bonus raises ammo capacity, which is the difference between finishing a long Act 2 level with reserves and finishing it with a pistol. Somebody in the team should be covering ammo economy.
- Karlee senses hazards and sleepers through walls and gains a Quick Inventory slot. Sleepers that grab a Cleaner in a corridor are one of the cheapest ways to lose a No Hope run, and she removes that failure mode outright.
- Nightmare pays more supply points than Recruit or Veteran, so once a deck is genuinely built the higher difficulty unlocks cards faster. Attempting it before the deck exists just burns time on the same first three levels.
Common Mistakes to Avoid
- Filling a 15 card deck without setting the draw order.
- Leaving the safe room with unspent copper.
- Treating Trauma as something healing kits will fix later.
- Four Cleaners with overlapping team bonuses and no ammo or healing coverage.
- Triggering alarms and car horns while a special Ridden is still alive.
Frequently Asked Questions
How many levels are in the campaign?
Thirty three missions, arranged as four Acts and ten chapters. Act 1 has 13 missions, Act 2 has 10, Act 3 has 9 and Act 4 is a single long boss level called The Abomination. Later expansions added further Acts on top of that.
Does deck order really matter?
Yes. Decks are drawn in the order you arrange them rather than shuffled, and you take one card per level. A card sitting at position 12 will not be in play until deep into Act 2, so the fix for your weakest area belongs in the first few slots.
Which Cleaner is best for a new player?
Doc or Mom. Doc raises healing efficiency and gives the team +25% Trauma Resistance, and Mom gives the team one extra life plus an extra support inventory slot. Both cover the mistakes a new team actually makes, rather than adding damage nobody is missing.
What are Corruption Cards?
Cards the Director plays against your team before a level, changing conditions rather than raising numbers: added specials, fog, mutations, timed objectives and environmental hazards. They are displayed in the safe room beforehand, so they are meant to be read and prepared for.
What is the difficulty order?
Recruit, Veteran, Nightmare and No Hope, with No Hope added in April 2022 alongside the Tunnels of Terror expansion. Nightmare and above pay noticeably more supply points, but they assume a finished deck and four Cleaners covering different roles.
More Back 4 Blood Guides
- Back 4 Blood Best Builds
- Back 4 Blood Tier List
- Back 4 Blood Walkthrough
- Back 4 Blood Beginner's Guide
- Back 4 Blood Tips & Tricks
- Back 4 Blood Weapons Guide
- Back 4 Blood Combat Guide
- Back 4 Blood Boss Guide
- Back 4 Blood Maps & Locations
- Back 4 Blood Crafting Guide
- Back 4 Blood Classes & Characters
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