To advance in Zylos Hand guild, you need to be active in world pvp and show your enthusiasm to the Viceroys and King Zylopfa himself.
Other than doing wpvp, you have the option of doing one of several world pvp missions in order to give you more ratslayer tokens, which in time will gain you higher ranking among your fellow ratslayers.
You can choose from the missions to the left.
Many of these missions originated at the 6th of november 2006, where King Zylopfa created them in order to further the world pvp on the Frostwhisper Realm.
From one of the missions you can clearly see that it was ment for level 60.