NGL I've read through all the comments here and I have to agree with everyone. A lot of potential here and if you took the feedback from everyone here I think you could make some good money on this! :D
1.) Allow for lower aiming.
2.) Pregnancy as described by Mr. Squirrel post 100%
3.) Make a visual cue for when you add something to your inventory, the audio cue and paired with an empty container visual fooled me into believing I had gotten nothing. Only when I was prompted with "Your inventory is full" did I bother to check and notice It was full of clothing (which is a bit buggy to start with).
4.) Save checkpoint system please :)
5.) Fix these bugs (Undress does not remove non-underwear armor) (Spinning around an enemy's attack then centering yourself inside them causes them to just stand there unsure of how to proceed). (When shoes (speed buff) are removed via sex scene, the 1-speed buff remains).
6.) Add collision as described by arkenophas, a lot of enemies and objects can just be walked through. (Enemies require you to wait for their attack to miss)
7.) Just an opinion as well (Make the blaster unlimited ammo but it reduces the enemies yellow bar instead of killing them. This makes them more of a threat and promotes stealth play over just PEW PEW area clear! To Mr. Squirrels point as well, the enemies are too quick as well if we're meant to run away and evade enemies.
But hey this is just my opinion and you're free to do what you want :D if you become super serious about developing this game I think a lot of people, myself included would be more than happy to support you! I'm looking forward to seeing a reply!