• 
  Completed Training

  Awarded for completing the Single Player training mode as any character
  GS: 10

  83.70%
• 
  Combo x2

  Awarded for a 2x Kill Combo
  GS: 15

  97.35%
• 
  Combo x5

  Awarded for a 5x Kill Combo
  GS: 20

  43.73%
• 
  Challenge x15

  Awarded for defeating 15 opponents in Challenge Mode
  GS: 10

  16.92%
• 
  Challenge x50

  Awarded for defeating 50 opponents in Challenge Mode
  GS: 25

  9.11%
• 
  Won 10 Matches

  Awarded for winning 10 matches
  GS: 10

  63.27%
• 
  Won 50 Matches

  Awarded for winning 50 matches
  GS: 15

  23.85%
• 
  Won 100 Matches

  Awarded for winning 100 matches
  GS: 25

  17.45%
• 
  Complete Mission Mode

  Complete Mission Mode as any character
  GS: 20

  56.11%
• 
  Played 100 Matches

  Awarded for playing 100 Multiplayer matches either offline or on Xbox LIVE
  GS: 25

  23.77%
• 
  Marksmanship

  Awarded for a score over 10,000 in the 'Shooting Range'
  GS: 25

  45.18%
• 
  Six Degrees of Small Arms

  Awarded for playing someone online who has this Achievement
  GS: 0

  46.52%

Ivar & Gullarp: Best Friends Forever - Frozen in Time DLC achievements

• 
  Honorary Barbarian

  Awarded for completing Mission Mode as Ivar or Gullarp
  GS: 15

  13.16%
• 
  Barbaric Recruiter

  Awarded for hosting a match using the Iceberg or Village level
  GS: 20

  13.95%