Collect the hidden briefcases to unlock various bonuses. Note: Some briefcases are given as rewards for completing hidden objectives:
Machine Gun Kick combo: The Chase: I Need An Exit: The briefcase is in the corner of the market area behind the fruit stands.
Quick Kicks combo: Storming The Drain: Touch the top two platforms in the second to last room.
Storyboard Sequence 1: Red Pill: The Key: Successfully complete the bonus objective in the second room by not using any guns.
Storyboard Sequence 2: The Frenchman: Kill the first set of enemies, go to the red cross in the dungeon, go to the right to find the briefcase.
The Beginning Of The End combo: Seraph's Apology: Return to the teahouse from the theater then destroy one of the tables and all eight support columns.
The Codebreaker combo: Weapon Training: The briefcase is with The Operator's secret stash in the upstairs corridor when returning to teahouse.
The One combo: The Burly Brawl: Defeat 30 Agent Smiths and the briefcase will appear in the center of the level.
Ultimate Hyper Strike combo: Red Pill Rescue: The Security Guard: Defeat the SWAT team on the stairs within the time limit.
Completion bonuses
Successfully complete the game on the Easy difficulty setting to unlock the "Unbreakable Melee Weapons" and "Bullet Reflection" options. Successfully complete the game on the Normal difficulty setting to unlock the "Vampiric Health" and "All Weapons" options. Successfully complete the game on The One difficulty setting to unlock the "Infinite Health" option. To unlock the cheat options easily, successfully complete the game on the Easy or Normal difficulty setting. Then, enter the level selection screen and play the first level again. After killing the Agent and the man in the white suit, kill Agent Smith. The One difficulty setting will now be unlocked. Enter the level selection screen and play the final Boss battle on The One difficulty setting. After defeating him, all cheat options will be unlocked.
Defeating Agent Smith
To defeat Agent Smith at the train station, you must first weaken him. When you hear an announcement of a train approaching, grab a hold of him and throw him in front of the train.
Defeating the Witch
Use the Bullet Stop ability to throw the various items in the room at her. They each do a lot of damage. When she casts the Barrier spell, avoid her or your weapon will break and you will be stunned. Make sure to disarm her as soon as possible.
Dive through walls in Dojo
In the Dojo when finding the Killing Blow, you can get through doors easier by diving through them with X instead of slashing them. You can also tell the difference between fake and real doors by going through them this way.
See through leaves
In the intermission sequence in the garden, Trinity says "Keep your blade sharp". They turn to face the camera, and you can see Neo's hair through the leaves when they cover his head.
The Code Breaker combo
Successfully complete all training tutorial objectives to unlock The Code Breaker combo.
The One mode
Successfully complete the first level (Lobby Dreams) without dying to unlock the The One difficulty setting, which is the hardest difficulty setting.
Zion Archive level
Upgrade the icon in the 8 o'clock position on the Atman Principle to permanently unlock the Zion Archive level at the level selection screen.