Gothic 2

Gothic 2 cheat codes: 
Type "Marvin" in your character screen("B" by default).
Now you open the console with [F2]:
"cheats god"     - God mode
"toggle frame"   - show FPS and TRS
"cheat full"     - full healing
"attributes"     - opens the window for the character modes:
0                - momentary life energy
1                - maximum life energy
2                - momentary Mana
3                - maximum Mana
4                - strength
5                - fate (the values 6 and 7 changed that probably no
influence on the character)
"protection"     - protection from weapons, magic ect.
1                - weapon protection
3                - fire protection
4                - magic protection
6                - projectile protection
"insert gold"   - Leather bag with 1000 pieces of gold and 100Exp.
near your character.
"lurker"         - a lurker appears
"more snapper"  - a Snapper appears
"troll"          - a Troll appears
"warg"           - a Warg appears
"sheep"          - a sheep appears
"draconain"      - a Echsenmensch appears
"icegolem"       - an ice GOLEM appears
"firegolem"      - a fire GOLEM appears
"stonegolem"     - a stone GOLEM appears
"more scavenger" - a Scavenger appears
"wolf"           - a wolf appears
"blackwolf"      - a black one wolf appears

Open gothic2.ini file in Gothic2 directory and change
"bloodDetail-2"  to  "bloodDetail-3"
You'll see the difference in game.