Since goblin 4p and 5p scenes requires player to find a secret location. It will not be unlockable in this update but will be able to view in animation gallery after editing save.
Viewing post in (WIP) Hailey's Treasure Adventure comments
Why making them only available in secret location though? I understand the appeal of having "easter eggs" but personally I prefer when there is a way to discover the animations while playing normally rather than having to try weird setups.
I also like the idea of having a level full of goblins and getting 2/3/4/5p animations depending on number of them alive (=the more you f*ck up the more she gets f*cked...!)
Could you maybe make the 4p/5 part of normal gameplay in hard difficulty, so there's a reward for playing this mode?