There are soap since ancient Babylonian times (though they are not bar soap).
But the idea of bacteria didn't show until early modern era and virus more later industrial revolution. Because of that, soap isn't really used for personal hygiene.
Main ingredient for soap is alkaline, it can kill germs.
Bullet is faster than some dude swinging a sword.
The physics became messier.
And why use classic teleport attack on last page? Not from the beginning?
Please use gun not kick or fist in modern era, because it's superior.
Why the minotaur doesn't move after one attack? There are two panels after the attack.
That creature flying and phasing through the plane but can interact with physical object, some alien? And using gun inside a plane without damaging it, special bullet?
Please add 5 or 10 to his age to be more realistic.
Why the dragon ignoring the one who disturb him and attack some village? Well dragon psychology always a mystery, so whatever.