User blog comment:Damac1214/Rumor: Map Pack 3 Leaked + Map Pack 3 Reveal Trailer coming soon/@comment-91.67.152.139-20130618144234/@comment-1263839-20130619071819

It's not necessarily "more skill", it just requires the player to deal with not having Juggernog. You also seem to forget that the Wunderwaffe can kill Zombies around corners because of it's chain. The Thundergun's no damage blast is also not a glitch.