Here's my notes:
Pros
I like that you make use out of those annoying car blockades.
New scenes are great. The Aunt reverse cowgirl pic could use some anim, of course.
Definitely glad you added the cheat room.
Thanks for fixing the Isabelle trade logic, that was annoying. Now for giving bulk items...
It's a small thing, but I really enjoy the fact that you put extra effort into changing the dialogue for the second time the kid has sex with any woman in any particular scene. It changes the experience a bit, as the women start to become more corrupted/accepting of the shota/incest.
Thoughts
--I was initially against the sentimentality of Isabelle's most recent ring-return quest, but the symbolism is appropriate. Still, it's sort of logic-defying, because the kid could just pocket the ring/give it to his mother, without Isabelle ever knowing. Eh, more of a nitpick, however.
--I think you could've given better hints regarding fuel. Yes, it's somewhat common sense to search cars, but maybe having the kid's internal monologue suggesting specifically to search cars could've been helpful. I myself was looking for gas/fuel pumps. -__-'
--Was hoping to see progress on Perez and Sonja. Guess I'll have to wait a bit longer. :/
Suggestions:
--After you talk to each girl initially, the "talk" option is useless. I personally like it, even if it's just random chatter. Maybe consider keeping some of that dialogue (e.g. between the kid and his mother about him being her new husband?). I'd especially love it if the "talk" could be a progressive thing; it doesn't necessarily need to advance your relationships, but could show the progression IN the relationships?
--Batteries are utterly useless for me. Maybe you could introduce an enemy that would actually necessitate the flashlight? (like, a night critter afraid of the light?)
--Combat/Enemies weren't improved at all. I suppose that's a work in progress. Already suggested a few ideas and mentioned my criticisms in previous posts.
--Still hoping the R-scenes and/or "dark" version of the game comes out, but it looks like that's an unpopular opinion.
--A few unused or unfinished areas (e.g. the bathrooms/offices in the store, the entire library, cafeteria/far left wing of the school, and the uppermost section of the police station map).
--As discussed in previous posts, a companion or danger for the women in having them search would open up more possibilities.
--The girls are getting cummed inside quite a bit. Isabelle mentions the kid may be infertile, but do you have pregnancy fetishes in store? Just curious. Might widen your demographic.
A few bugs:
--Every time there's a new version and I retain my old saves, I find that on the select screen, the selection cursor gets stuck on someone (in v.3, it was the mom, in v.4 it is the aunt) whenever I need to heal or whatever. Restarting seems like the only way to fix this, which is pretty annoying. Also stuck with the key gift items on my menu screen, which means I'll probably have to restart regardless.
--My problem with restarting, even with the cheat room, is that a lot of the quests can take quite a while to manifest (e.g. Isabelle's search/retrieve quests), and same thing for getting the relationship up for the women.
I guess I could always grab a save from the other ULMF users, but if possible, I'd much rather get a new version and have my saves work with that. I get there's likely a technical issue in thinking that, but wishful thinking.
--There is a clipping error in the garage area of the store; you can walk through the uppermost middle walls next to the large but unenterable hole.
--Previously killed zombies in an area will have "ghosts"; they'll respawn for a second when encountered and then disappear.
