Yeah, you're right, i got it figured out bro, i also completed the game as far as the current update allows. It's not neccesarily the fact that it's so incomprehensible, but moreso that the general confusion could easily be removed by instead putting an energy bar instead of a battery there, or just showing the stamina numbers themselves, since there's no reason it can't be done, the game does it everywhere else, it's an incredibly small change that would make things way easier.
And I know how exploration works, i don't neccesarily have a problem with them, it makes the game way more intriguing. It's just that at the start, the player is going to be most keen on the camera, and having 30 seconds tops is going to make them unsure as to what the game is trying to be. Since most porn games don't just lock the good parts out instantly, and you don't need to grind 4 hours just to get a bit of satisfaction.