The action skill challenge 'Your Kung Fu is Best' is a line taken from the television series The X-Files.Challenges do not give money as a reward.Some Challenges are impossible to complete without entering and reentering mission areas many times, and some of them can be very time consuming.A grand total of 758,500 Experience Points can be gained by completing all of the challenges.Challenges differ from Achievements in that they reward Experience Points rather than Gamerscore or Trophies.
In the case of 'Orbit Achieved' this can potentially result in all of the levels of this Challenge being displayed as each level completes in sequence. The completion of a Challenge will bring up a notice in the top of the screen.Open 5,000 Lootable objects (excluding red chests) Open 1,000 Lootable objects (excluding red chests) Open 250 Lootable objects (excluding red chests) Open 50 Lootable objects (excluding red chests) Kill 2,500 enemies with your Action Skill Kill 1,000 enemies using your Action Skill Kill 25 enemies in succession with no more than 7 seconds in between each kill Kill 15 enemies in succession with no more than 7 seconds in between each kill Kill 10 enemies in succession with no more than 7 seconds in between each kill Kill 5 enemies in succession with no more than 7 seconds in between each kill