There are few unlockable items you can get from enemies if you manage to beat
the unlockables are below k (note that this items are only temporary which 
means when u log out u lose these items)

Unlockable                                     How to unlock
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- legendary sword (available for all players) 
You have to beat the legendary warrior this enemy is found when u click the 
battle button then if u encounter this enemy beat him then clik his shiny 

- sword plungerizer (available for all players)
Go to the rip of the sky and then go to vince then click the ladder and then 
vince will tell u if u want the plungerizer or not and this is a good water 
weapon for lvl 30-40 characters

- tusk spear (available to all players)
First go to battle and if u encounter the chrask monster then beat it and 
then clik on one of his tusks then u got the tusk spear

- frogzard sword (available to all players)
First goto the frogzard quest 2 then battle every monster u encounter and 
until u encounter the motherzard enemy then beat it and then u will get the 
frogzard sword and then complete the quest and theres a special in this weapon 
that can transform u to frogzilla

- zhilo's axe (available for guardians only)
This weapon is from zhilo the axemaster and only guardians can obtain it first 
be lvl 10 at fighter class and only guardians can continue the class 6-10 and 
then when u get to 10 on fighter class u fight 4 or 5 enemies and note that 
these enemies are very strong and then when u encounter zhilo u must beat him 
and then after that he will give his axe to you.