Unlockable characters:Unlock the following characters by performing the corresponding tasks:CHARACTER – HOW TO UNLOCKBilly Ray Logg – Defeat Billy Ray Logg in Mission modeISO-7982 – Beat Mission modeMousey McNuts – Defeat Mousey McNutsProfessor Von Brown – Defeat Professor Von BrownUnlockable levels:Unlock the following levels by performing the corresponding tasks:LEVEL – HOW TO UNLOCKShooting Range – Beat Mission modeVolcano level – Complete Mission mode. Hidden targets at Shooting Range:To view a third row of targets at the Shooting Range, jump up and climb on top of the top row of targets. A bullseye on the third row of targets is worth 5,000 points.Achievements:ACHIEVEMENT – HOW TO UNLOCKCompleted Training (10 points) – Complete Single-Player training mode.Combo x2 (15 points) – Kill two opponents in rapid succession.Combo x5 (20 points) – Kill five opponents in rapid succession.Challenge x15 (10 points) – Defeat fifteen opponents in Challenge mode.Challenge x50 (25 points) – Defeat fifty opponents in Challenge mode.Won 10 Matches (10 points) – Win ten matches in Single Player or by playing on Xbox Live.Won 50 Matches (15 points) – Win fifty matches in Single Player or by playing on Xbox Live.Won 100 Matches (25 points) – Win one hundred matches in Mission Mode or Battle Mode.Complete Mission Mode (20 points) – Complete Mission mode.Played 100 Matches (25 points) – Play 100 matches either offline or on Xbox Live.Marksmanship (25 points) – Score 10,000 in the Shooting Range.Six Degrees of Small Arms (0 points) – Obtained from a special player online.Honorary Barbarian (15 points) – Complete Mission Mode playing as Ivar or Gullarp. Barbaric Recruiter (20 points) – Host an online match using the Iceberg or Village level.