[Help to design] In the 41st millenium there is only...

[Sam Baughn]

Here's a few martial art styles:

Imperial Guard Bayonet Drill

Skills: Spear.
Techniques: Close Combat (Spear); Feint (Spear); Retain Weapon (Rifle); Targeted Attack (Spear Thrust/Neck).
Perks: Sure Footed (Uneven); Teamwork.

Optional Traits
Advantages: Combat Reflexes; Fearlessness.
Disadvantages: Bloodlust.
Skills: Beam Weapons (Rifle); Fast Draw (Knife or Long Arm); Knife; Running; Savoir Faire (Military); Soldier.

Imperial Guard Trench Fighting

Skills: Brawling; Knife or Main-Gauche.
Techniques: Back Strike (Knife); Close Combat (Beam Weapons (Pistol)); Elbow Strike; Ground Fighting; Head Butt.
Cinematic Skills: Blind Fighting.
Cinematic Techniques: Dual-Weapon Attack.
Perks: Dirty Fighting; Ground Guard; Improvised Weapons; Off-Hand Weapon Training; Sure Footed (Uneven).

Optional Traits
Advantages: Ambidexterity; Combat Reflexes.
Disadvantages: Bloodlust.
Skills: Axe/Mace; Beam Weapons (Pistol); Fast Draw (Grenade, Knife or Pistol); Forced Entry; Guns (Shotgun); Shortsword; Soldier; Stealth; Throwing; Two-Handed Axe/Mace; Wrestling.

Imperial Sword and Pistol Fighting

Skills: Beam Weapons (Pistol); Broadsword.
Techniques: Close Combat; Feint (Broadsword).
Cinematic Techniques: Dual-Weapon Attack.
Perks: Pistol Fist; Off-Hand Weapon Training; Weapon Bond.

Optional Traits
Advantages: Ambidexterity; Combat Reflexes; Enhanced Parry (Broadsword).
Disadvantages: Code of Honour.
Skills: Armoury (Melee Weapons); Brawling; Fast Draw (Pistol or Sword); Guns (Gyroc); Savoir Faire (Military).

Rough Rider Combat Training

Skills: Beam Weapons (Pistol); Lance; Riding.
Techniques: Cavalry Training; Combat Riding; Hands Free Riding; Mounted Shooting; Quick Mount; Staying Seated.
Cinematic Techniques: Dual-Weapon Attack.
Perks: Off-Hand Weapon Training; Quick-Sheathe (Pistol).

Optional Traits
Advantages: Ambidexterity.
Skills: Animal Handling; Beam Weapons (Rifle); Broadsword; Fast Draw (Grenade, Pistol or Sword); Guns (Grenade Launcher); Liquid Projector (Flamethrower); Throwing.

Ecclisiarchy Evicerator Combat

Skills: Theology (Imperial Cult); Two-Handed Sword.
Techniques: Close Combat (Two-Handed Sword); Retain Weapon (Two-Handed Sword); Spinning Swing (Two-Handed Sword).
Cinematic Skills: Kiai; Power Blow.
Cinematic Techniques: Whirlwind Attack (Two-Handed Sword).
Perks: Focused Fury; Huge Weapons (ST); Penetrating Voice; Shtick (Cloaked).

Optional Traits
Advantages: Clerical Investment; True Faith.
Disadvantages: Berserk; Disciplines of Faith; Fanaticism; Intolerance.
Skills: Axe/Mace; Beam Weapons (Pistol); Brawling; Broadsword; Flail; Guns (Gyroc); Intimidation; Leadership; Liquid Projector (Flamethrower); Public Speaking; Religious Ritual; Staff; Two-Handed Axe/Mace.

Astares Assault Training

Skills: Brawling; Environment Suit (Battlesuit); Guns (Gyroc).
Techniques: Attack from Above; Close Combat (Broadsword); Push Kick; Retain Weapon.
Cinematic Skills: Mental Strength.
Cinematic Techniques: Backbreaker; Dual-Weapon Attack; Hand Catch.

Optional Traits
Skills: Armoury (Battlesuits, Melee Weapons or Small Arms); Axe/Mace; Beam Weapons (Pistol or Rifle); Fast Draw (Ammunition, Grenade, Knife, Pistol or Sword); Knife; Liquid Projector (Flamethrower); Piloting (Flight Pack); Shield; Throwing; Two-Handed Axe/Mace; Wrestling.