You guys need to play the Warriors Orochi series. Specifically the 2nd one. Warriors Orochi is basically a mashup of Dynasty Warriors and Samurai Warriors, pulled together into one world by a new threat known as Orochi, who apparently also created the world or something.
The weapons have effects that you can add to them (the most important ones being speed and... flash? I don't remember what it's called, but it stuns enemies when you hit them) and also have there slots for SUPER effects (the most important being Almighty, which basically doubles the value of your regular effects, if I remember correctly) and if you have maxed out speed with Almighty on a level 4 weapon with either Sun Wukong or Hideyoshi Toyotomi, you almost can't mash the button fast enough to get to the next attack in your combo. And as Sun Wukong, you already travel at about the same speed as Lu Bu's red hare anyway (possibly faster?) so you can basically run through entire levels absolutely wrecking people's trout before they even know you're there. And with the right weapons effects, even Chaos mode is simple when you're above level 70. As Sun Wukong, you can just speed through and kick everyone's butt on Chaos mode in a couple of minutes and farm for experience with your other characters (switch to them, kill some dudes, switch back to mister speedy cloud to move on to the next bunch of dudes) and for weapon effects.
I was addicted to Warrior's Orochi 2 for a while. I can't ever go back to Dynasty Warriors because I got so spoiled on how quick and intense it was. Had nearly every character at level 99, more than half of them had weapons with Almighty status and some other super effects, plus all their weapons were at level 4 and had almost completely maxed out stats (you have to pick and choose which effects you want, since weapons only have 8 or 10 slots maximum at level 4 and there are over a dozen different kinds of effects) and proficiency levels. I unlocked every character including Shin Orochi, had an insanely high record in the arena mode, etc.
Oh, and there are giant troll kind of enemies, and you can even unlock one to play as and run around as a gigantic monster dude. I think it's only for arena mode, though. Maybe. Or maybe that was a gameshark/armax cheat or something.
I really miss that game.