Everything you need, is to play the first level of the game. (You don't have to wait 30 minutes or i don't know, until you are at the Endboss in the Main Dungeon, AND more imporant, you can farm longer, cause the game doesn't start to lag so fast)
______________________________________________________________________________
You will get a Bard, a Sorc and a Priest.
Let the Priest take most of the hits, so you have his Heal Spell Ready. Take the rest with the mage out.
The Bard don't need any levels, cause you will let him die one round before the Endboss.
(Which isn't important, but you get good Items, which make everything easier)

When you are at the Endboss, you simple let the Mage/Priest kill the Goblins, and the Boss spawns new ones.
You will level up the heroes very fast, and all the damage you get can be healed by the priest.
(Level up Damage/Attack Speed than Health/Defense, also the healing spell of the priest in the beginning)

Around level 20 - 30 you will easily one hit the enemys. Or you two hit them, so the Boss can spawn 2 goblins, which will make the farming go faster.
______________________________________________________________________________
When you Onehit the goblins, you won't take any damage.
When you Twohit them, you have to heal some times.



Thanks for reading my guide, i hope it helped you farming.