1895 Notre Dame Paris level reward
Finish the level in story mode under the medium difficulty setting to access Notre Dame as a playable character in arcade mode.

1920 Aztec Ruins level reward
Finish the level in story mode under the medium difficulty setting to access Stone Golem as a playable character in arcade mode.

1853 Wild West level reward
Finish the level in story mode under the medium difficulty setting to access The Colonel as a playable character in arcade mode.

2019 NeoTokyo level reward
Finish the level in story mode under the medium difficulty setting to access Sadako as a playable character in arcade mode.

2280 Return to Planet X level reward
Finish the level in story mode under the medium difficulty setting to access Ozor Mox as a playable character in arcade mode.

1932 Chicago level reward
Finish the level in story mode under the medium difficulty setting to access Big Tony as a playable character in arcade mode.

1972 Atom Smasher level reward
Finish the level in story mode under the medium difficulty setting to access Khallos as a playable character in arcade mode.

1990 Oblask Dam Siberia level reward
Finish the level in story mode under the medium difficulty setting to access the Mutant TimeSplitter as a playable character in arcade mode.

Secret mini-games
When using the Temporal Link, press Triangle while using the link to open a set of mini-games, like the Snake.

Ending bonuses
Finish the game in story mode under the easy difficulty setting to access the Cardboard Characters cheat, Unlimited Ammo cheat, and the Streets multi-player level in arcade mode.

Finish the game in story mode under the normal difficulty setting to access Big Heads and every character Cloaked cheats and the Compound multi-player level in arcade mode.

Finish the game in story mode under the hard difficulty setting to access the Site multi-player level in the arcade mode.

2315 Robot Factory level reward
Finish the level in story mode under the medium difficulty setting to access Machinist as a playable character in arcade mode.

2401 Space Station level reward
Finish the level in story mode under the medium difficulty setting to access Reaper Splitter as a playable character in arcade mode.

Arcade League (Amateur) bonuses

Beginners Series
Adios Amigos!: Hector Babosal, Lean Molly (Gold)
Casualty: Dr. Peabody, Crypt Zombie (Gold)
Top Shot: Hangar Level, Sgt. Shock, Elimination mode (Gold)

Too Hot to Handle
Monkey Immolation: Crispin, Flame tag (Gold)
Disco Inferno: Louie Big Nose, Lt. Wild (Gold)
Burns Department: Undead Priest, Nightclub, Virus mode (Gold)

It's A Blast
Night Shift: Sentry bot, Leech mode (Gold)
Spoils of War: Meezor Mox, Thief mode (Gold)
Demolition Derby: Male Trooper, Female Trooper, Robot Factory Level, Vampire Mode (Gold)

Team Series A
Club Soda: Slick Tommy, Jimmy Needles (Gold)
Station Stand: Lt. Shade, Zones mode (Gold)
Men in Gray: Accountant, Kawer, Assault mode (Gold)

Mode Madness
Chastity Chased: Regeneration mode (Gold)
Shrinking from the Cold: Private Sand, Sgt. Slate, Shrink mode (Gold)
Scrap Metal: Scrapyard, Chassisbot (Gold)

Arcade League (Honorary) bonuses

Burns 'n Bangs
Chinese Burns: Calamari, Chef Hat (Platinum)
Snow Business: Snowman, Trooper Grey (Gold)
Rocket Man: Venus Star, Capt. Sand, Duckman Drake (Gold)

Team Series B
Hack A Hacker: Krayola, Milkbaby (Gold)
Rice Cracker Rush: Riot Officer, The Master (Gold)
Superfly Lady: Capt. Pain (Gold)

Outnumbered, But Never Outpunned!
Someone Has Got To Play...: Capt. Night (Gold)
Time to Split: Barby Gimp, Scourge Splitter (Gold)
Can't Handle This: Chasm, Hatchet Sal, Handyman (Gold)

Maximus
Cold Corpse Caper: Cyber Fairy, Gargoyle (Gold)
Killer Queen: Leo Krupps (Gold)
R109 Beta: Ufopia, Gladiator mode (Bronze), Roman Hat, Lt. Chill (Platinum)

Elimination Series
Baking For The Taking: Chinese Chef, Gingerbread Man (Platinum)
Brace Yourself: Braces, Trooper Brown (Gold)
Starship Whoopers: Chinese, Monkey Assistant, Trooper Black (Gold)

Arcade League (Elite) bonuses

Duel Meaning
If I'm Ugly-You Smell!: Mikey Twoguns, Jared Slim (Platinum)
Golem Guru: Kypriss, Fat Characters (Platinum)
Golden Thighs: High Priest, Aztec Warrior (Platinum)

One Shot Thrills
Babes in the Woods: Jo-Beth Casey (Gold)
Double Bill: Beetleman, The Impersonator (Gold)
Nikki Jinki Bricky: Nikki, Jinki (Gold)

Sincerest Form Of Flattery
Aztec The Dino Hunter: Dinosaur (Gold)
Half Death: Drone Splitter (Gold)
Dead Fraction: Jebediah Crump (Silver)

Frantic Series
Hangar's Hat's Off!: Henchman, Dark Henchman (Gold)
Can't Please Everyone...: Maiden, Changeling (Gold)
Big Top Blowout: Mr. Giggles (Silver), Stumpy (Gold)

Team Series C
Bags Of Fun: Ringmistress, Big Hands, Slow Motion Deaths (Gold)
They're Not Pets!: Baby Drone, Bear (Gold)
Nice Threads: Small Heads, Compound level (Bronze)

Challenge bonuses

Infiltration
Silent, But Deadly: Viking Hat (Gold)
Trouble At The Docks: Pirate Hat (Gold)
Escape From NeoTokyo: Big Ears Hat (Gold)

Banana Chomp
Gone Bananas: Private Coal (Gold)
Monkey Business: Private Poorly (Silver), None (Gold)
Playing With Fire: Wood Golem (Silver)

Glass Smash
Pane In The Neck: Rotating Heads (Gold)
Bricking It: Brick Weapon (Gold)
Stain Removal: Hunchback (Silver), Nothing (Gold)

Behead The Undead
Fight Off The Living Dead: Sewer Zombie (Gold)
Sergio's Last Stand: Sergio (Gold)
Day Of The Dammed: Feeder Zombie (Silver/Gold)

Monkeying Around
Simian Shooter: Insect Mutant (Silver)
Monkey Mayhem: Lola Varuska, Mischief (Platinum)
Dam Bursters: Robofish, Circus level (Gold)

Cut-Out Shoot-out
Take 'em Down: Ample Sally (Gold)
Fall Out: Marco the Snitch (Gold)
Pick Yer Piece: Sgt. Rock- Gold

Timesplitters "Story" Classic
Badass Buspass Impasse: Badass Cyborg (Gold)
But Where Did The Batteries Go?: R One-Oh-Seven (Platinum)
Hit me Baby One Morgue Time: Cropolite (Gold)

Hints & Tips

Faster reloads
A few of the guns have slower reload times than others. Instead of pressing Reload, press Next Weapon swiftly followed by Previous Weapon (or vice versa). When you change to a new weapon and go back to it, the weapon will instantly be reloaded.

2019 NeoTokyo: Astro Lander mini-game
Play the level with in the normal difficulty setting in story mode. After following the hacker to her secret hideout, use her password to go into the TimeSplitter research area. Once in, go into the room at the end of the hall. Inside is a laptop and a set of lockers. Two of the lockers will open. Inside one is a sub machine gun. Inside the other is the arcade game Astro Lander. It is on the floor of the locker and looks like a Nintendo 64 game cartridge. Select "Astro Lander" from inside your inventory. A small menu will appear with Astro Lander and two other areas. After playing it or turning off your PlayStation2, select your temporary uplink (in story mode) and press Action to play Astro Lander or any other game you may found.

Kill Zombies faster
When a zombie chases after you, shoot it in the head.

1990 Oblask Dam Siberia: Anaconda mini-game
Once you are across to the other side of the dam and go into the other building with all the shelves, look to something that looks like a Nintendo 64 game cartridge on the first shelf. Walk over and pick it up. It will be in your inventory as "Anaconda". Highlight it and press Action to play it. Note: This was done in the normal difficulty setting.

Destroying the Bio-Hazard case
When you restore the power in the building, go down to the "Digging Site". When you are there, you will see a case with something in it. Make sure you have many of Timed Mines. Walk towards it and throw four or five Timed Mines at it then run. When it blows up, the woman on the speaker will start to talk. People with excellent guns (Flame Thrower, Shotgun, Machine Guns, etc.) will appear. You will also have a new objective to not let any mutants live.