This is the current list of the fastest players on each level of the Challenge so far. This will get updated frequently so check this often if you don't want to lose your record.
Level 1: Skill4Life 0'01"20
Level 2: Skill4Life 0'03"49
Level 3: Skill4Life 0'11"96
Level 4: Skill4Life 0'05"27
Level 4A: Skill4Life 0'01"11
Level 5: Skill4Life 0'06"36
Level 6: Skill4Life 0'08"57
Level 7: Skill4Life 0'12"73
Level 8: Skill4Life 0'12"64
Level 9: Skill4Life 0'12"32
Level 10: Skill4Life 0'18"27
Level 11: Skill4Life 0'07"33
Level 12: Skill4Life 0'15"23
Level 12A: Dark X-rane 0'3"06
Level 13: Skill4Life 0'8"85
Level 14: Skill4Life 0'2"77
Level 15: Dark X-rane 0'10"83
Level 16: Dark X-rane 0'34"58