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Killing Floor

Killing Floor

By ···10 min read·Multi-source verified
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Welcome to Killing Floor, the co-op survival FPS where you and up to five friends face down waves of zeds. Pick your perk – whether it's the Medic, Commando, or Gunslinger – level it up, and master your loadout to survive increasingly difficult encounters. The goal is simple: kill everything that moves, earn cash, and prepare for the final boss.

This guide dives deep into the world of Killing Floor, helping you conquer every challenge. We'll cover how to find those elusive collectibles scattered across the maps, break down strategies for surviving tough waves and boss fights, and offer tips on perfecting your perk builds and weapon choices. Get ready to master the art of zed-killing and earn that Gold Medal.

Part 1

Complete Killing Floor Part 1 walkthrough covering Day One, Day Two, and Day Three, including finding work and locating key characters.

Walkthrough:

  1. Tex's Office: Collect all mail (sales flyer, Gift Certificate, application), get the gun, examine and play the Phono Graph, examine the ex-wife's photo. Get the credit card application for the Electronics shop from Tex's Office. Examine the application, open the desk drawer to get the stamp, then open the desk drawer again to get the ink pen. Combine the pen and the application to create a signed application. Combine the stamp and the signed application to create a ready-to-mail application. Examine the fax machine on top of the cabinet and the Crime link Computer on the table behind Tex's desk. Examine the mailbox, go down to the street and find a mailbox. Examine Rusty's place.
  2. Find Some Work: Go to the Pawnshop and talk to Rook (dialogue choices: B-A-B-A-A-B-C). Get the glass shard from the alley behind the pawnshop. Examine the shard (clue: Red Hair) and the footprint (clue: about size 14). Get the Basketball and play with it. Pull down the staircase, climb it, and open the door. Examine the dumpster, open it, and look inside. Examine the radio, get the Radio, examine it again to get the batteries, and examine the batteries. Open the fence and go through to the street. Get the newspaper in front of the door at the Brew & Stew. Examine the Newspaper and read all articles. Go to the newsstand and talk to Chelsee (dialogue choices: B-A-B-A; clues: Green eyes, tattoo of anchor on arm).
  3. Police Station & Alley: Go to the police station and talk to Mac Malden (dialogue choices: A-A-C; clues: White, AB-). Getting Mac to talk about the Martian case will get you halfway there. Note the controls: SPACE BAR for MODE CHANGE, SPACEBAR+CTR to GET DOWN LOW, SPACE BAR+SHIFT to GET UP HIGH, SPACE BAR+E to GET UP FAST. Go to the alley and talk to the bum until he tells you about his addiction (dialogue choices: B-B).
  4. Brew & Stew & Alley (cont.): Go to the Brew & Stew and talk to Louie (dialogue choices: B-C-A, ask about all). Go to the alley. Talk to a man (dialogue choice: C). Give pie to the bum and ask about all (clues: Norm, 6'3

Part 2

Complete Killing Floor Part 2 walkthrough, including how to get the cork, wire, and film.

Walkthrough
  1. 1
    Go to the Golden Gate Hotel lobby and talk to Ardo. Ask about all topics (B-B-C-C).
  2. 2
    Re-enter the hotel for the second time.
  3. 3
    Combine the Mask with the Firesuit.
  4. 4
    Enter the hotel for the third time (B-B-B).
  5. 5
    Enter the password: S I L I C O N.
  6. 6
    Go to the hot tub room and look in the vase to find a cork.
  7. 7
    Go to the bedroom, open the closet doors, and examine the Champagne glass.
  8. 8
    Get the Champagne glass.
  9. 9
    Open and examine all drawers and cabinets. Examine the magazine.
  10. 10
    Examine the locked drawer.
  11. 11
    Get the foil from the table.
  12. 12
    Go to the hot tub room.
  13. 13
    Use the glass on the hot tub, filling the vase and getting the cork.
  14. 14
    Move the towel and look down the drain to see film and a screwdriver.
  15. 15
    Examine the cork and get the wire.
  16. 16
    Go to the bedroom and use the wire to pick the lock on the locked drawer.
  17. 17
    Open the drawer and get the shoelace.
  18. 18
    Move the picture and examine the twisty board game.
  19. 19
    Go to the Piano room.
  20. 20
    Examine the piano, sheet music, and bench.
  21. 21
    Play the piano.
  22. 22
    Get the deodorizer magnet.
  23. 23
    Combine the shoelace and the magnet to get a string magnet.
  24. 24
    Move the picture to the right of the bedroom door.
  25. 25
    Examine the name list of girls.
  26. 26
    Go to the hot tub room.
  27. 27
    Use the string magnet on the screwdriver.
  28. 28
    Use the screwdriver on the drain cover (press the cover button to crouch behind walls or objects).
  29. 29
    Get the film from the drain.
  30. 30
    Go to the Electronic shop.
  31. 31
    Use your credit card to buy the blue light special (developing kit).
  32. 32
    Combine the film with the developing kit.
  33. 33
    Take the pictures to Franny at the pizza parlor. Use dialogue options -C (mugging), - Pug.
  34. 34
    Go to Coit Towers.
  35. 35
    Talk to Beek. Use dialogue option -C (Pug).
  36. 36
    Talk to Pug. Use dialogue options C-B-C-C-B-B-B-B-B.
  37. 37
    Go to the Colonel's office.
  38. 38
    Talk to the Oriental girl. Use dialogue options A-C-B-A-A.
  39. 39
    Go to the Countess' Mansion.
  40. 40
    Look at the Eagle.
  41. 41
    Use the foil on the eagle.
  42. 42
    Get the cigarette case and examine it.
  43. 43
    Get the note pieces from the trash can and put them together (they are not useful).
  44. 44
    Get the watch from the fireplace mantel.
  45. 45
    Examine the watch.
  46. 46
    Move the newspaper and examine the ashtray. The first lines of the note read: "...circumstances...progressing smoothly... delighted to hear that Murphy was able to provide the final pieces of our puzzle."
  47. 47
    Go back to the Colonel's office.
  48. 48
    Lift the picture and look at the picture.
  49. 49
    Open the desk drawers.
  50. 50
    Get and examine the Greeting Card.
  51. 51
    Get and examine the Envelope.
  52. 52
    Move the vase on the right side at the bottom shelf.
  53. 53
    Get the computer disk.
  54. 54
    Turn on the computer and use the disk on the computer.
  55. 55
    Go to your girlfriend's house, Melahn Tode's apartment. Use dialogue options B-B-B-B-A and ask about the colonel, chameleon, and key.
  56. 56
    Go back to the Colonel's office and use the key on the file cabinet.
  57. 57
    Open and take the files.
  58. 58
    Examine the files.
  59. 59
    Move the magazines on the floor in front of the door.
  60. 60
    Get the receipt and examine it.
  61. 61
    Go to Melahn's apartment. Ask about the receipt using dialogue option B.
  62. 62
    Go to the Colonel's office.
  63. 63
    Move the picture on the left side of the file cabinet.
  64. 64
    Examine the numbers and open the safe. Turn the left knob 5 times, the middle knob 7 times, and the right knob 1 time.
  65. 65
    Get the book and combine it with the file.
  66. 66
    Go to the Roadside Motel.
  67. 67
    Go to G.R.S.
  68. 68
    Go to the R&D office and get access to Paul Dubois' computer. Avoid the security eye by getting between the desk and wall and getting down low.
  69. 69
    Examine and get the wrench from the floor.
  70. 70
    Get the pennant flag on the wall.
  71. 71
    Examine the pennant to get the computer card.
  72. 72
    Examine and get the small TV.
  73. 73
    Go to the HA office. Use the wrench on the vent on the door.
  74. 74
    Use the Geiger counter (Geigger) on the open vent to open the door.
  75. 75
    Examine the note on the desk.
  76. 76
    Get the CD on the desk.
  77. 77
    Open drawers, getting a CD and Passcard. Examine them.
  78. 78
    Go to the conference room. Open a desk drawer and get the CD player.
  79. 79
    Combine the TV, CD player, and Company CD.
  80. 80
    Examine the magazine.
  81. 81
    Go to Tucker's office.
  82. 82
    Examine the door control panel.
  83. 83
    Use the passcard to open the door.
  84. 84
    Examine the safe control panel.
  85. 85
    Examine the safe door.
  86. 86
    Use the panel and use the CD player for voice on the safe.
  87. 87
    Quickly enter the safe within 30 seconds.
  88. 88
    Examine the statue and take the statue.
  89. 89
    Examine the tape and take the tape.
  90. 90
    Examine the trash can and take the shredded note.
  91. 91
    Go out and hide behind the plants in the corner.
  92. 92
    When the robot enters the safe, quickly close the safe.
  93. 93
    Open drawers.
  94. 94
    Read the tape numbers: 142235.
  95. 95
    Get the match.
  96. 96
    Fix the shredded note.
  97. 97
    Go to the Supervisor's office (one door to the left). Avoid the security eye by hiding behind the partition wall in the back corner.
  98. 98
    Open the safe.
  99. 99
    Turn on Eva's computer.
  100. 100
    Find Eva's computer card under her desk to the inside right side.
  101. 101
    Use the card on the computer and watch the computer.
  102. 102
    Use the mini disk on the computer.
  103. 103
    Examine the safe.
  104. 104
    Open the safe using the code 142235.
  105. 105
    Get the vial and examine it.
  106. 106
    Go to the R&D office.
  107. 107
    Examine Paul Dubois' desk.
  108. 108
    Examine Paul Dubois' computer.
  109. 109
    Turn on the computer and use the computer card.
  110. 110
    Examine all doors.
  111. 111
    Go to the Conference room. Avoid the security eye by hiding behind the desk and getting low.
  112. 112
    Look at the screen.
  113. 113
    Open the cabinet door.
  114. 114
    Examine the panel on the table.
  115. 115
    Use the panel on the table.
  116. 116
    Get the key on the ledge of the wall on the left-hand side of the room.
  117. 117
    Unlock the cabinet doors.
  118. 118
    Open the doors.
  119. 119
    Turn on the VCR.
  120. 120
    Use the tape in the VCR.
  121. 121
    Examine the statue, breaking it to get a chip.
  122. 122
    Combine the chip with the watch.
  123. 123
    Examine the watch again.
  124. 124
    Go to your office.
  125. 125
    Go to Bastion on Sanctity.
  126. 126
    Look at the chameleon.
  127. 127
    Go into the small hallway.
  128. 128
    Get the small clamp.
  129. 129
    Get the strap.
  130. 130
    Look at the gargoyle head on the wall and look at the gem.
  131. 131
    Get the gem.
  132. 132
    Combine the clamp with the strap to create a slingshot.
  133. 133
    Combine the gem with the slingshot to create a loaded slingshot.
  134. 134
    Use the slingshot on the vase, breaking the vase.
  135. 135
    Go to the main room in Bastion.
  136. 136
    Combine the cigarette with the vial.
  137. 137
    Combine the lethal cigarette with the match.
  138. 138
    Put the lethal cigarette on the table.
  139. 139
    Watch the computer show.
  140. 140
    Look at Alaynah.
  141. 141
    Move the shield.
  142. 142
    Respond with A-B-B-B.
  143. 143
    Watch the computer show.
  144. 144
    Go to Broken Skull.
  145. 145
    Order a manly drink (B-B-B-A).
  146. 146
    Offer her a $100 bill.
  147. 147
    Respond A or B when she asks for the token. Respond B.
  148. 148
    Go to the Roadside Motel.
  149. 149
    Talk to Alaynah.
Tips
  • When avoiding security eyes, stay low and use cover.
  • Combine items strategically to create new tools.
  • Pay attention to dialogue options as they can affect outcomes.

Part 3

Complete Killing Floor Part 3 walkthrough, including the Pawnshop, Broken Skull, and Observatory puzzles. Get the lighter fluid and solve the stasis room.

Walkthrough
  1. 1
    Ask about the token and silver dollar.
  2. 2
    Go to the Pawnshop.
  3. 3
    Talk to Rook and ask about the silver dollar.
  4. 4
    Go to Broken Skull.
  5. 5
    Talk to the Girl.
  6. 6
    Show her the silver dollar.
  7. 7
    Talk to Ferrel Plus.
  8. 8
    Play the game with him.
  9. 9
    Drinks are on the house.
  10. 10
    On Day 6, look at the pile of leaves.
  11. 11
    Turn around and look at the door.
  12. 12
    Look at the smoke alarm.
  13. 13
    Open the wall panel or the right door.
  14. 14
    Get the lighter fluid.
  15. 15
    Get the smooth stone.
  16. 16
    Get the flint.
  17. 17
    Get the rake.
  18. 18
    Rake the pile of leaves.
  19. 19
    Put lighter fluid on the pile of leaves.
  20. 20
    Combine the stone with the flint, creating a spark.
  21. 21
    Put the spark on the pile of leaves.
  22. 22
    In the hallway, go to the Residential Deck (R L R R L).
  23. 23
    Get the pipe.
  24. 24
    Examine the stasis room door.
  25. 25
    Examine the Emergency Room door.
  26. 26
    Go to the Stasis Room (R S R).
  27. 27
    Open the door and go in.
  28. 28
    Turn on the controls.
  29. 29
    Move the left slider to 60.
  30. 30
    Move the right slider to 12.
  31. 31
    Push the button for EPINEPHRINE.
  32. 32
    Push the button for ELCTRICAL SHOCK.
  33. 33
    Move the Left slider to 90.
  34. 34
    Push the button for SODIUM PENTATHOL.
  35. 35
    .
  36. 36
    Move the right slider to 14.
  37. 37
    Move the left slider to 98.6.
  38. 38
    Move the right slider to 16.
  39. 39
    .
  40. 40
    Push the button for SODIUM BICARBONATE.
  41. 41
    Go to the Observatory (L R L R S R L).
  42. 42
    Examine the instruction paper.
  43. 43
    Walk left.
  44. 44
    Use the key on the Wall Panel, opening the wall panel.
  45. 45
    Move the Links to 986 BOH.
  46. 46
    Get the mini Computer.
  47. 47
    Get the Cocktail gass.
  48. 48
    Examine the Glass, getting the straw.
  49. 49
    Walk to the right side of the room.
  50. 50
    Move the plant exposing a floor panel.
  51. 51
    Examine the floor panel.
  52. 52
    Use the pipe on the floor panel.
  53. 53
    Get the computer cable.
  54. 54
    Near the exit door, look at the small hole in the wall.
  55. 55
    Use the straw on the Recessed Button in the hole.
  56. 56
    Combine the mini Computer with the Winter Chip, creating a computer virus linkup.
  57. 57
    Combine the computer virus linkup with the computer cable.
  58. 58
    Use the Computer Virus linkup on the moon child Computer.
  59. 59
    Watch the show.
Tips
  • Pay close attention to the directional inputs for navigating between locations.
  • The stasis room puzzle requires precise slider movements and button presses in the correct order.
  • Ensure you have all the necessary components before attempting to link the computer virus.

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