A bit of critique dropping in :
Overall, it's an enjoyable game with quite a bit of content so far, the artwork and the character design is great.
But, and it's a bigger but(t) than Namu, the way the scenes are presented is severely.. lacking.
I don't know if it's because the animations look cheap (For example Blowjob scenes look like you took Namu.jpg and moved your cursor left-right-left-right.) or my general distaste of animations in h-games (Because if I want to look at animations, I'd watch a hentai instead of playing a game), or a combination of both.
I don't speak for anyone ofcourse, but IMHO the game would greatly benefit from a switch from animation to a classic CG format.
An example with the Rimjob-Snake :
1. Have the scene be full-screen. No 200% zoom on Namu's penetrated part where this is literally the only thing you see, no. You see both Namu and the Snake-Lady in FULL view.
2. No "cheap" left-righ-left-right animation (or in this case, up-down-up-down), make it something like Dialogueboxes 1-9 are the Snakelady sitting over Namu, Dialogueboxes 10-15 are the Snakelady sticking out her tounge and rimming Namu, Dialogueboxes 16-22 are the Snakelady actually putting her tongue in and the rest of the dialogue is orgasm time. But, no animation, just a CG for each part. Keeping the sound effects and the white flashes in and you have yourself a good scene.
About the zoom part, this is the other part of why I dislike the presentation of the scenes. Again I don't speak for anyone but myself, but I for one would enjoy it even more to see for example the Zombie-Hulk fucking Namu in full view. Not only makes the obvious size difference the scene that much more hot, it also get's rid of that weird 2 inch off-screen penis that you see, by seeing everything and not just a 200% zoom on Namu's ass.
I know, if you wanted to be doing it that way you'd already done it by now, but this is just the opinion of a simple Pleb. And don't take it too heart that much, again, your artstyle and the game itself is great. I just feel like the animations and the zoom are dragging it down to a point where I'd rather play the game with the Sex Immunity skill activated from the very start.
Good luck going forward. I'll still keep an eye out for this game tho, because the Snake-Ladys alone hit all the right spots.
