The JACK Pack 2: Best of the Webshow Add-on for You Don't Know Jack has 5 achievements worth 125 gamerscore.
Play all episodes in JACK Pack 2
Get 3 astrology questions correct in JACK Pack 2
Get 3 music questions correct in JACK Pack 2
Get 3 math questions correct in JACK Pack 2
Collect all 10 prizes in JACK Pack 2