1853 Wild West level rewards:
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Successfully complete the 1853 Wild West level in story mode on the medium
difficulty setting to unlock The Colonel as a playable character in arcade mode.
1895 Notre Dame Paris level reward:
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Successfully complete the 1895 Notre Dame Paris level in story mode on the
medium difficulty setting to unlock Notre Dame as a playable character in arcade
mode.
1920 Aztec Ruins level rewards:
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Successfully complete the 1920 Aztec Ruins level in story mode on the medium
difficulty setting to unlock Stone Golem as a playable character in arcade mode.
1932 Chicago level reward:
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Successfully complete the 1932 Chicago level in story mode on the medium
difficulty setting to unlock Big Tony as a playable character in arcade mode.
1972 Atom Smasher level rewards:
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Successfully complete the 1972 Atom Smasher level in story mode on the medium
difficulty setting to unlock Khallos as a playable character in arcade mode.
1990 Oblask Dam Siberia level reward:
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Successfully complete the 1990 Oblask Dam Siberia level in story mode on the
medium difficulty setting to unlock the Mutant TimeSplitter as a playable
character in arcade mode.
2019 NeoTokyo level rewards:
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Successfully complete the 2019 NeoTokyo level in story mode on the medium
difficulty setting to unlock Sadako as a playable character in arcade mode.
2280 Return to Planet X level rewards:
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Successfully complete the 2280 Return to Planet X level in story mode on the
medium difficulty setting to unlock Ozor Mox as a playable character in arcade
mode.
Ending bonuses:
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Successfully complete story mode on the easy difficulty setting to unlock the
Cardboard Characters cheat and the Streets multi-player level in arcade mode.
Successfully complete story mode on the normal difficulty setting to unlock Big
Heads and All Characters Cloaked cheats and the Compound multi-player level in
arcade mode. Successfully complete story mode on the hard difficulty setting to
unlock the Infinite Ammo cheat and the Site multi-player level in arcade mode.
Successfully complete all challenges with at least a Bronze rank to unlock the
Paintball cheat.
Faster reloads:
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Some guns have slower reload times than others. Instead of pressing Reload,
press Next Weapon quickly followed by Previous Weapon (or vice versa). When you
switch to a new weapon and go back to it, the weapon will automatically be
reloaded.
