Velvet Assassin is not, in its default state, for everyone. Legions of players give up on the game because of just a few of its features-- namely, its slow pace and unforgiving mechanics. But not you! YOU are a devout member of the PC Master Race, and can bend games (well, a lot of them) to your will by screwing with the config files! No, it's not fig-tional, it's the truth!

• First, find the aio folder in the Velvet Assassin game folder. By default (as in, it's not my fault if it's somewhere else for you) this is found in
  C:\Program Files (x86)\Steam\SteamApps\common\Velvet Assassin\aio
  
  
• Copy the aio folder and paste it somewhere safe convenient outside of the Steam folder, such as the Desktop. This is our backup, so we have something to revert back to if we screw up the configs. You can't fall back on nothing!
  
  
• In aio (the one in the Velvet Assassin folder), open difficulty.cfg and global.aio in notepad or notepad++.

Here's what the inside of the aio folder should resemble:
Thanks for the screenshot, blood 1504!

Too bad.

To make a change, simply find a variable (line with adjustable number) in the .cfg or .aio file. Example:

Type a new number in the current value's place (do not mess with spaces, names, etc) and then save the file and start the game to test your changes.
Example:


Recommended changes:

• Increase Sneak Speed
  Helps you progress a bit faster, and makes stealth easier.
  In difficulty.cfg, find the line titled SneakSpeed under your current difficulty level (Easy or Agent). Change the 1 to a number between 1.5 and 1.8 for convenience.
  
  
• INCREASE DISGUISE EFFECTIVENESS! (DO THIS!)
  Makes SS Uniform disguise actually *gasp* useful! Decrease the distance at which enemies notice you, allowing for some social stealth gameplay.
  In global.aio, find camoflauge_min_distance. Change 500 to a lower number, at most 200.
  
  
• Increase Close Kill Range
  Make takedowns on walking targets easier.
  In global.aio, find max_closekill_distance (line 77, 1/3 way down page), change to 200.
  
  
• [agent] Patrol Speed back to 1
  Keep the normal AI walking speed for Agent difficulty, and fix their stuttering motions.
  Under [agent] in difficulty.cfg, change PatrolSpeed from 1.1 to 1
  
  
• Increase Knife Damage (insta-kill)
  Enables you to kill an alerted enemy with one knife attack (wait around a corner to avoid damage to yourself).
  Open weapons.cfg, find [KNIFE] at the very bottom and change WeaponBaseDamage to 100.

Experiment! Just remember to save (Ctrl+s) within notepad before starting the game!

So you beat the game. And yes, I know you cheated to beat that last mission. Good job decreasing NPCDamge and increasing PlayerDamage! But you want more. Fear not! Use your newfound Notepad superpowers to bestow great replayability upon Velvet Assassin, with Ninja Fun Time Mode!

• Ninja Fun Time Mode
  In difficulty.cfg, find SneakSpeed under [agent]. Change it to 5.

Save the file and start up Velvet Assassin, and start a new game on Agent difficulty.

Those Nazis don't stand a chance...