Heya! I love the concept! I beat it on Normal mode after several attempts.
I was confused at first as to why I wasn't doing damage to the enemy until I was finally able to bring down their energy meter. A tutorial would have been appreciated but it's a prototype so it's understood. In any case, the concept is brilliant! Kind of gives me a Punch-Out vibe where every round you recover a little bit of health.
Having the 'sex animations' being tied behind 'winning' your fights is a really good thing in my mind. Having intermittent and increasing intensity sex animations is also a big bonus in my mind to make me want to keep fighting for more animations. Freaking love this concept!
I found that JUST kicking was my best move since it briefly stunned the opponent. I don't know if that is just indicative of my playstyle or if there is something to be changed there, just felt like sharing it. Some combos between punches and kicks could incentivise more playstyles or strategies.
Music and SFX are a MUST here! I couldn't help but imagine some rock/techno tunes to match the beat-em-up gameplay + techno theme of the characters.
Aside from your energy meter recovering slower and not being able to use your skills, perhaps there can be a further punishment where you are stuck standing still/slowed down until your energy recovers.
I hope there is plans for different enemies having different sex animations. Levels where there are many little minions along with the main boss will be interesting. The minions are essentially fodder to recover your health.
Overall, great game concept! Look forward to it's progress! <3