i cant do challenge 14: malfunction

[legacy-maddox]

i keep on winning this match by capturing flags but it wont let me progress on to challenge 15

[legacy-variablesunknown]

Maddox,
I just had the same exact problem. Go back to challenge 1, the nali slaughter and make sure that you have completed it. The challenge mode begins with the first two matches unlocked. Your completed challenges will be different color text from the incompletes, so look at the first challenge as the color witll be different not the "locked" icon next to the title. Complete the first challenge and the final one will become playable.