Door Kickers: Action Squad supports local split-screen and online co-op for two players, and co-op completely changes the tactical equation. One player can breach while the other covers, classes can complement each other, and the revive mechanic lets you recover from mistakes that would end a solo run. This guide covers the best class pairings, how to split roles, communication rules, safe movement protocols, hostage protection in teams, and the loadouts that make duo runs unstoppable. Before you squad up, make sure you understand the strengths and weaknesses of each class so you can build a complementary team.
Why Co-Op Changes Everything
What works in solo play often fails in duo runs — and vice versa
Revive Mechanic
Downed players can be revived by their partner. A mistake that ends a solo run becomes a 3-second delay in co-op. This alone makes Nightmare difficulty viable in teams.
Crossfire Angles
Two players can enter a room from different doors. Enemies cannot cover both angles simultaneously. Crossfire eliminates the biggest danger in room clearing — the blind corner ambush.
Class Synergy
Classes that are mediocre alone become unstoppable together. The Shield is slow and weak in solo play but becomes a walking fortress with a Sniper behind him. Synergy is the co-op multiplier.
Best Duo Combinations
Six tested pairings ranked from S-tier dominance to situational synergy
The Classic
Shield + SniperThe Shield blocks all frontal damage while the Sniper sits behind him and eliminates threats before they can flank. In open rooms this pair is unstoppable. The Shield never needs to kill — he just needs to not die.
Speed Demons
Recon + BreacherThe Recon moves ahead silently and picks off isolated enemies while the Breacher kicks in the front door and clears the main room. This duo finishes missions in record time. The Breacher creates noise and draws attention; the Recon exploits the distraction.
Tactical Toolbox
FBI + AssaultThe FBI brings twice the tactical items of any other class, meaning more flashbangs for crowds and more medkits for recovery. The Assault provides steady, reliable damage at any range. This is the most forgiving duo for new co-op players.
Double Trouble
Breacher + BreacherTwo Breachers with shotguns turn every room into a slaughter. One player breaches left, the other breaches right. No enemy survives the crossfire. This is pure aggression and incredibly fun, but one mistake from either player ends the run because neither has survivability.
Slow and Steady
Shield + FBIMaximum survivability. The Shield blocks damage, the FBI heals any chip damage and throws flashbangs over the shield to stun enemies before the Shield even enters the room. You will never die, but you will also never set a speed record.
Precision Pair
Sniper + ReconThe Recon's speed lets him reach vantage points and spot enemies for the Sniper. In large buildings, the Recon handles interior rooms while the Sniper controls exterior sightlines. Both classes are fragile, so positioning is everything.
Role Splitting
Every duo needs a leader and a follower — here is how to divide responsibilities
Player 1 — The Point Man
- Breaches first and decides which door to enter
- Calls flashbang usage before entering rooms
- Sets the pace — fast or slow depending on mission type
- Usually the Shield, Breacher, or Assault class
Player 2 — The Support
- Covers the Point Man's blind side and flanks
- Handles revive duty if the Point Man goes down
- Manages long-range threats and backup angles
- Usually the Sniper, Recon, or FBI class
Communication Rules
Five callouts that prevent 90% of co-op deaths
Call your door before breaching
Both players breaching the same door wastes a flashbang and creates friendly crossfire. Assign left and right before every room.
Announce flashbang throws
Two flashbangs in the same room is a waste. Call "+flashing" before throwing so your partner holds theirs for the next room.
Call out enemy types
Shotgun enemies and shield bearers need immediate attention. Calling them out loud lets your partner prioritize their fire.
Revive before looting
Ammo drops and health pickups will still be there after your partner is up. A downed player is a ticking clock — revive first, loot second.
Plan the escape route before entering
If the room goes bad, both players need to know which direction to retreat. If this goes wrong, we fall back to the last cleared room.
Safe Movement Protocols
How to move through a building as a team without getting split or ambushed
Both players should be near the same door before breaching. Never split up to breach two different doors simultaneously unless you have already cleared the area between them.
The Point Man counts down before kicking the door. Player 2 should be ready to fire the instant the door opens. Uncoordinated breaches give enemies time to react.
After the breach, the Point Man enters and secures the nearest cover. Player 2 holds the doorway from outside, covering the Point Man's entry and watching for reinforcements.
Do not leave a room until every enemy is dead and both players have full health. A wounded player rushing to the next room is a liability. Heal, reload, then move.
In long corridors, one player advances to the next cover point while the other covers from the previous position. Once secure, the second player advances past the first. Repeat.
Hostage Protection in Co-Op
Two players means twice the firepower — and twice the risk of collateral damage
Designate a single shooter
In hostage rooms, only one player should engage. The other covers the door and watches for reinforcements. Two shooters in a hostage room doubles the risk of collateral damage.
Use flashbangs, not gunfire
Before entering a hostage room, the FBI or Assault player should flashbang it. Stunned enemies are easy pistol targets and cannot harm hostages while stunned.
Split entry angles
One player enters from the main door while the second breaches a side wall or alternate entrance. This crossfire prevents enemies from using hostages as human shields.
Never both use shotguns
If either player is running a shotgun, they should switch to a pistol for hostage rooms. Pellet spread from two shotguns makes accidental hostage kills inevitable.
Recommended Co-Op Loadouts
Pre-built gear combinations for the most effective duo combinations
The gear you bring into a duo run matters just as much as the classes you pick. A poorly equipped Shield operator dies just as fast as a reckless Breacher if he lacks medkits. These three loadout pairings are designed specifically for the S-tier and A-tier duos above. For even more builds, including solo and hostage-focused setups, see the full Best Loadouts guide.
The Classic — Shield + Sniper
Ballistic Shield + Glock 17
Medkit x2, Breaching Charge x1
The Shield's job is to not die. Two medkits keep you alive through sustained fire, and the Glock handles enemies that get too close. Push forward slowly and let the Sniper do the killing.
AWM + M1911
Flashbang x1, Medkit x1
The AWM one-shots most enemies and penetrates light cover. The M1911 is your close-range panic button. Stay behind the Shield, pick your shots, and never worry about taking damage.
Speed Demons — Recon + Breacher
MP5 + Silenced M1911
Silencer, Flashbang x1
Move ahead silently and eliminate stragglers before the Breacher makes noise. The silencer prevents alerting distant rooms. Your speed lets you reach flanking positions while enemies focus on the front door.
M1014 Shotgun + Desert Eagle
Flashbang x2, Medkit x1
Kick every door, flash every crowded room, and delete enemies with the M1014. The Deagle handles mid-range threats the shotgun cannot reach. Two flashbangs mean you can clear four heavy rooms safely.
Tactical Toolbox — FBI + Assault
M4A1 + Desert Eagle
Flashbang x2, Medkit x2
The FBI's extra items make him the ultimate support. Two flashbangs and two medkits mean your team has twice the tactical options of any other duo. Flash for the Assault, heal when either player takes damage.
SCAR-L + M1911
Flashbang x1, Medkit x1
The Assault provides steady, reliable damage at every range. The SCAR-L is accurate and ammo-efficient. This player is the damage backbone while the FBI handles the tactical support.
Nightmare Difficulty Co-Op
The hardest content in the game is designed for two players
Nightmare difficulty unlocks in Act IV and represents the ultimate challenge in Door Kickers: Action Squad. Enemies have more health, deal more damage, and spawn in greater numbers. Solo Nightmare is possible for elite players, but co-op Nightmare is the intended experience.
What Changes in Nightmare
- Enemy health increased by approximately 50%
- Enemy damage output significantly higher
- More enemies per room and tougher spawn patterns
- Less ammo drops and fewer medkit pickups
Co-Op Advantages
- Revive mechanic negates one-shot deaths
- Shared tactical item pool (FBI + Assault = 6 items)
- Crossfire angles split enemy attention
- One player can draw fire while the other flanks
Co-Op Quick Reference
Mission type to duo combo — match the scenario to the team
| Mission Type | Best Duo | Key Strategy |
|---|---|---|
| Standard Room Clear | Breacher + Recon | Speed clear with flanking and frontal pressure |
| Hostage Rescue | FBI + Sniper | Precision and flashbangs, no collateral damage |
| Bomb Defusal | Recon + Breacher | Speed to objective, charges destroy obstacles |
| Boss Encounter | Shield + Sniper | Tank draws fire, sniper deals damage from safety |
| Nightmare Difficulty | Shield + FBI | Maximum survivability and shared item pool |
| Star Farming | Breacher + Breacher | Double shotgun room clears for fastest times |
TEAM ASSEMBLED?
Gear up with the right loadouts and learn mission strategies to put your teamwork to the test.