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On PC, Serious Sam: Siberian Mayhem cheats are entered through the in-game console using cht commands. The campaign has five levels, but the available guide material here gives specific secret counts and landmarks only for Chapters 1 and 3—not a verified complete route for all five. Use the chapter details below as guide-attributed leads, and check console autocomplete for command spelling and options.
How to cheat in Serious Sam: Siberian Mayhem?
The documented method is for the PC version. On a typical US keyboard, press the tilde key (~), usually to the left of 1, to open the console. Keyboard layouts can differ, so that key may not work on every setup. Type cht and press Tab to browse commands; the guides describe many commands as taking a value after an equals sign, with 1 generally enabling an effect and 0 disabling it.
Enable cheats and developer commands
| Command | Effect described by guides |
|---|---|
cht_bEnableCheats=1 |
Enable cheats. |
cht_bEnableCheats=3 |
Enable developer-level cheats; some commands require this level. |
cht_bEnableCheats=0 |
Disable cheats. |
These command names and effects come from secondary game guides rather than an official command manual. Use the console’s autocomplete to confirm spelling and available parameters in your game.
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Common cheat effects
| Command | Effect described by guides |
|---|---|
cht_bGod=1 |
God mode. |
cht_bFly=1 |
Flight. |
cht_bGhost=1 |
Noclip. |
cht_bTurbo=1 |
Increased movement speed. |
cht_bInfiniteAmmo=1 |
Infinite ammunition. |
cht_bGiveAll=1 |
All weapons and maximum ammunition. |
chtJumpToChapter() |
Jump to a chapter. |
chtJumpToNextLevel() |
Jump to the next level. |
Guides also list commands affecting ammunition, weapons, armor, health, skill points, invisibility, enemies or bosses, and progress resets. Their exact forms and parameters are not established here; browse the console rather than guessing a command.
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Cheats and achievements
The available sources do not establish whether enabling cheats disables Steam achievements in Siberian Mayhem. If you want an untouched achievement run, the prudent option is to keep a separate save or playthrough for experimenting with cheats; that is a precaution, not a confirmed game rule.
How to find all the secrets in Serious Sam: Siberian Mayhem?
The Steam store describes a five-level campaign with side missions and hidden secrets. Secret routes are chapter-specific and can involve interacting with machinery, breaking objects, or leaving the obvious path. The chapter details below are attributed to the guides that report them; they are not a complete, cross-checked walkthrough for every level.
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Chapter 1: “A Smell of Petroleum Prevails”
One chapter guide lists 16 secrets in this level, including ammunition, traps, armor, rockets, explosives, a looped portal, and a classic arena. It gives these example landmarks:
- After docking the boat, look by a large pipe among debris on the floor for ammunition.
- Near an abandoned shack, check beneath wooden flooring for a rocket launcher.
- Later, break crates and destroy a concealed wall to reach a classic arena.
A separate walkthrough describes routes differently, so treat these as guide-reported landmarks rather than definitive directions. Explore around the named objects and look for breakable or concealed surfaces.
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Chapter 3: “Siberiade”
A chapter guide reports 27 secrets. One example is inactive machinery near the rail tracks: activate it to trigger oil elementals. This is an environmental interaction, not simply an item placed along the main route.
Chapters 2, 4, and 5
The game has five campaign levels, but the cited chapter material does not establish verified secret counts or route instructions here for Chapters 2, 4, and 5. No reliable aggregate total across all five chapters is established by the cited guides, so the two reported chapter counts should not be added together and presented as the game’s total.
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What to know about the game
Steam lists Serious Sam: Siberian Mayhem as released on January 25, 2022, developed by Croteam and Timelock Studio, and published by Devolver Digital. Its store page describes it as a standalone expansion with single-player, online co-op, Steam Workshop, a level editor, and 51 Steam achievements. Croteam’s January 25, 2022 announcement called it “a stand-alone expansion to Serious Sam 4, working just as well whether you’ve played SS4.”
Steam also lists full controller support, but the console-entry instructions above are keyboard guidance; the cited command guides do not establish a controller method for opening the console.
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