in stage 4 the pit you must get a double flawless and do a fatality. but you cannot block or use a guy that has block in his/her fatality

heres a list of the guys you can use and their fatalitys:

liu kang:fatality:rotate d-pad clockwise starting from down[close to enemy

cage:fatality:fwd,fwd,fwd,hp[close to enemy]

kano:fatality:back,down,fwd,lp[close to enemy]

raiden:fatality:fwd,back,back,back,hp[sweep distance]

sub-zero:fatality:fwd,down,fwd,hp[close to enemy]

if you want a list of their special moves im me and tell me your user name and ill give em to ya.