After playing for a while, you may notice that you can’t farm XP or golds from quests. The only way you can earn them is by doing Training trail and Treasure trail. Unfortunately, you can do them 3 times a day, seriously.

Well, I’m going to tell you how we going to exploit this:

1. turn off your wifi and cellular connection. 
2. Go to Settings, General, Date & Time, turn off “Set Automatically”, then change date to one ahead. 
3. Go back to the game and reclaim all the freebie.
4. Repeat the process until you have enough enhancement ruins, XP, and golds.

Here is a demonstration:

The final update 1.4.0 has a new shop and items. One of them is Weapon souls that are required to upgrade your weapon's Limit Break.

It is so satisfying to breakdown 500,000+ Atra Atrament after you maxed out all equipment.