Long ass review ahead that I made cause I couldn´t find something better to do.
TLDR: I consider this the worst of Sum´s releases, if you want to see his best works I recommend MBF2 and NW Xmas special, and NW2 will most likely be better than this, much better.
After giving it another (more critic) watch, I must say the only things that show this is sum´s work is the overall quality of the animation and the fact that someone gets cucked. Other than that I personally take this as the "worst" of sum´s projects. If you even care to know, here´s why:
_The overall plot: It gets things going at a calm pace and makes a decent setting, but it takes 1/3 of the whole video to get things started, and then one realizes there are more story stills to go that will take up even more time. Making a story and giving context for the sex scenes can make the project better (imo) but if half the video is gonna be about that, it becomes a bit underwhelming.
_Model Quality: It´s good, if you only look at Liz (which you probably will). It was kinda funny how the penis seemed to be the only high-poly part of the mutant and I´m grateful you see little of him most of the time. I know that the male part tends to have less attention in these projects and I´m completely fine with that, but this must be the 1st time in which I wish scenes looked more dim and with most of the light focusing on the woman (IE: "Lulu with Orc" shorts).
_Animation Quality:Good, but not great. In sum´s projects (and any 3D smut project, really) the sex scenes consist of short loops playing over and over again, but it´s the way you go about it that can make it better. Use various camera angles, make the characters do a couple different in between those loops, add facial expressions, make use of the sfx for a bit more variety. The sound and the angles used were good, but it really was just 1 angle showing the same loop with little difference in the movements, looked more like a bunch of shorts put together than a full project.
All of these problems can be found in all of the other releases by Sum, but it wasn´t all of them at once.
For me the best project (taking into account the overall plot, model and animation quality) is MBF2, with a very close second being NW: Xmas special. Both these projects had their own problems, but the setting was well explained and didn´t take too long, the models looked overall great and had little problems such as light clipping and the scenes were varied with angles and positions, also sound work was just on point(except for the just plain excess of the classic "smack" sound but it was bearable).
Now Sum had some IRL problems troughout the time-span in which this project, I am not certain but I assume that this combined with the fact that Sum seemed to have lost a bit of interest in the project (saying that it was becoming a pain to work on it) is what ended in this 15 min long "ok" vid that could have been longer and better were the circumstances different.
Next is Neighbour´s Wife 2 and after that Mission K-9 Part 2. I honestly think NW2 WILL be better as Sum seems to enjoy working on that a bit more than this, and I hope MK9 P2 will stick to one theme instead of mashing them all together like part 1, all of it was good but there just wasn´t enough of anything.