Well, this was a rather short game. Even with me sucking at these types of games and taking the time to just look at some of the animations, it didn't take me longer than 1h and 30 minutes-ish to finish the whole thing. Didn't expect the Mission 1 boss to show up in the Final mission to help shoot the boss tho, that's for sure... The credits were cute too.
Gameplay-wise, my only gripes are that the platforming bits are awkward and that the pregnancy thing is under-utilized. The responsiveness for jumping is poor and the collision seems to be rather weird at times. The enemy that can impregnate the heroine only seems to spawn very rarely, and then you have to survive with her pregnant for ages before she actually gives birth.
Would've been more fun, imho, is a few more enemies could impregnate her, and if she got different side-kicks for it with different abilities. So you could choose who to get a pregnancy from and what kind of monster she has following her around helping her deal with enemies.
Oh well, a decent game, but not a particularly amazing one. Could've been better than just good, and even then, it's mostly good because of the H-content.