Looking for any games which I can beat the game by fucking my way through as seducing enemies or rape them or prostitute the MC etc. 2d or 3d or platformer doesn't really matter, can anyone suggest any games?
Depends on whether you want the fucking as a core part of the gameplay or not. If it has to be, there's this list, though I'm sure not all have purely sex-combat instead of fighting. This list should be more specific to that.
As for other games with a theme of sex against enemies / rivals throughout the game but not necessarily part of the gameplay: