Only BGC is hackable, since it still can be hacked by memory editing. You know the main.exe? That's encrypted to the max and it gets updated every week. Plus, some of the servers are going through the Rebirth patches, which updates the game rapid fire and would cause any hack that could be made, somehow, useless. Then you have to think about the ones who used to make the hacks. I'm pretty sure they've quit GC and moved on to other games by now.
Your only option is to learn about Armor Stacking. Currently, that's the only 'hack' you can do. But you can't ask here, it was decided to be PVP abusive and therefore banned from being shared. Someone is sharing the hack, but for $10. The price is a little steep for what he/she gives you, but eh. Anyway, this is the wrong section so.. I play NAGC, but I'm doing fine without the hacks. I actually made some friends dungeoning with others, so it's not so bad. You should try that.
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