There are way too many free games for you to try to change the core mechanics of one. If this isn't for you, then move on. I for one am tired of games with auto attack or MMOs that don't require me to think at least a little. That's why I am sticking with Allods, where the player, to be really successful is required not to be a damn bot.
You sound like a total loser, man. Why should you be able to tackle more than one monster? I don't see a logical reason as to why this is a rule. You shouldn't. If you want, all classes can do it, you just need to learn to play your class, develop it correctly, get adequate for your level gear and stat balance.
A veteran player wouldn't have written the post you wrote above me.
"[I Have a Potty Mouth], [I Have a Potty Mouth], [I Have a Potty Mouth], [I Have a Potty Mouth], [I Have a Potty Mouth], [I Have a Potty Mouth] and tits"