to b honest with you, i still think theres something in ascension that we are missing.
now i dont know if its a secret room, (doubt it) but usually i search either here (codz.com) or youtube freaquently.
lately i'v noticed
that after you get the DEATHMACHINES the next step is shooting the tubes by the swamp in the staminup room.
then after that your able to buy the winters howl from the mystery box. now i cant rely on people
to understand this but there is proof out there that this is a possibilty.
one is from this poster
and theres also another image floating around the web where theres picture proof of a winters howl on asc. check it out
EDIT: I did not take this picture *RESPONSIBLE HAS PSN
so in my opinion there could be more than just deathmachines.. or i could be wrong... *FREESPEECH > OPEN MINDEDNESS