Paul WS Anderson is a plague. A few parts of the resident evil movies are so bizarre they're funny, like the wesker fight, but overall not worth watching.
I can see what a monster hunter movie should've been in my head. Start in the monster hunter universe. Monsters have been disappearing and they've sent a hunter to track one (probably the ultimate antagonist monster, a legendary or just a flagship big boy like rathalos or diablos) and find out why. He finds a portal deep in the jungle and sees his quarry go through. While he's investigating, another monster shows up and attacks him, and they both go through the portal, ending up in medieval england. With the countryside being ravaged by monsters, he's gotta teach the britons how to monster hunt if he wants to get back home and close the portal. At the end he finds he can't get home, but that's okay because he's come to love this place and its people. Maybe at the end find out that he's saint george the dragonslayer, for maximum schlock.
And there you go, you've got monster hunter without guns, you've got a natural way to introduce randos to how the world works with the protagonist teaching the kings men how to kill and craft, and a silly schlocky script in keeping with shit like Sonic and Detective Pikachu. And then for the fans there's plenty of room for fish out of water jokes about monster hunter people. He slays the monster attacking the village, the lord throws him a feast, when they unveil the table laden with beer, all kinds of food, a roast boar, he's like "wow is that all for me?" Flat comedy shot of the lord and his people laughing, then hard cut to them looking aghast as the protagonist eats half the feast in like ten minutes. The monster flies off a cliff, everyone's like "how do we get down there?" and then the protagonist runs past them and just jumps the fuck off, lands completely unharmed, looks up at them like what are you waiting for. In the training montage have him swinging a greatsword around, he sets it down and three or four soldiers try and fail to pick it up.