idk abt a gallery guide, but I can help you unlock the scenes if you can tell me which scenes specifically you're missing (:
Ella: You'll need to kill the thugs and then go for power when fighting Michael. Train up and then attempt to fight Ella when you go in her apartment.
Weird: I'll list out the general needs--
-Have 2 different saves for futa and regular girl and prioritize the deryl route before the Kenny Party (make sure to go as the girl) Continue on from there until second scene w/ Tess in the showers.
-Have 3 different saves for Liz routes (Love, White-knight Cuck, and FULL cuck) The difference between the last 2 is whether you check up on Liz while you're getting pleasured by the secretary. Play up to the bonfire party for those two saves
I'll assume your missing weird scenes are centered around these, as it also took me a while to unlock them. Let me know if you need any more help :)