I know ( after some reading on this forum) now how to get every cg exept for 2 scenes i cant get a hold onto.

http://tinypic.com/view.php?pic=2hcmib4&s=5

thats a link to the gallery/gc's im missing , if any1 knows where to get them i'd apreciate it a lot

there is also 1 weapon i cant seem to find. Herse parfaite is its name, 1 of the materials for servalwi's final weapon

Herse Parfaite is obtained as a reward for Serawi's Gauntlet battle in the Arena.

The lower scene is the girl from arena after beating Will's gauntlet in NG+ (i think that's the requirement).
Can't help with the other, sry.

The other one involves all three heroines in their goth costumes. I think just having all of them wear the costume, then exit out of the workshop and a new event should appear.