Many people complaining here and saying, this is just a simple shooting game without erotic content. There is a little truth in it, but at the same time it's exaggeration. The sex part is there, just not in the best "quality" ..atleast on the quests. However, I have some ideas about what could improve the monster sex in the game ..although I'm not sure everyone will be on the same opinion.
We already have some nice combat and death scenes what we can easly watch in the gallery. Not too many yet, but they are still good. However, the most players prefer to see these monster contents during the zombie fight, rather than afterwards in a lab. The only problem is that, you can’t really enjoy these H-scenes during the missions, because you are too engrossed with fighting and to protect the heroines. In addition, for the rape scenes, the heroines' HP must reach the zero, which is almost the same as losing the mission. In other words, I could say that the developers continued the SOD2 where the first one was stopped, because just like in the first game, the problem is still with the main idea, which the game is based on.
But then the question remains, what needs to change to make it a great monster rape sex game?! The simplest answer is would be that, the monster rape with the heroines even should possible, if the girls' health is full yet, and under the H-scene, their HP shouldn't reduce at all. But for this, the dev should have to radically change the whole game, so it's better if I don't even start this line. But fortunately there is another similar option, what would already be easier to implement.
The main point of this, the most quest can only be lost in one way ..if the MC dies.
In my opinion when a heroine becomes incapable of fighting because her HP drops to 0, it doesn't need to be decreased more until -100 while she getting raped, and we don't need a Game Over after that. The advantage of this idea would be that the heroines never die, so you can enjoy the rape scenes as long as you want ...or until you or another heroine rescue the girl who is in trouble. In other words there is no time limit.
Maybe this endless rape idea sounds a little weird at first for some ppl, but maybe it's still better then if u can't see a single monster rape scene in a mission...
However, the dev has to be solved that, a quest can only be won, if you reach the end of the level with the whole team. In this case, you won't be able to leave all heroines behind you somewhere on the field...
But there is still one question then. If you can't lose the missions coz of the heroines, what will happen with the death scenes? I have just one solution for this. When the MC dies in a mission, the game can randomly choose a heroine for the scene with the same monster who you died by.
So far what ruins the game's hentai part is you have no chance to enjoy any sex/rape scene, coz the heroines falling too fast. So the game is really just about shooting zombies right now. But if there were no time limit during the sex scenes, maybe more ppl would calling it a porn game.
I don’t think this idea is perfect because there maybe some dead ends in it, but their correction is only a matter of detail. I described this as an option but not for any other reason.