The easiest way to level up is in the catacombs.you usually use your main characters in the game,so at about level 20 start taking your lower level characters to catacombs,but the twist is to hit your own strong people they hardly get any damage but weaker ones get a lot of exp and sp,and the good thing is your own people don't hit back,and easy money as well
I don't know if you already notest that when you die in Stella Deus, your character May loose up to 5 points from their LUCK Stats, those points are lost forever You will have to level up again to gain new Luck Points.
To prevent that from happening when you die, you should equip the Love Drop (Hachigane (R5) + Vital Nut (R5)) item, the GET LUCKY ability will prevent the loss of Luck points if you die.
Equipping the Rich Wallet on your characters can be a very good way to Increase the cash bonus reward at the end of the battles.
For this to work you will need 6 Rich Wallets one for each character (Whistle (R3)+ Charm (R2)) and all your characters taking part in this activity, will need to know at least the most basic combo skill: Combo Slash.
For exmaple, for completing the Catacombs Level 1, usually the reward is 3000; but if you equip 6 characters each with one Rich Wallet and then perform a 6 character combo attack that kill the enemy, your bonus reward will increase (you can get up to 40000+ bonus reward depending on how many 6 characters combos you perform during a battle)
1. Reach Chapter 5 2. Make sure you have less than 60,000 Gold (55,000-59,000 is fine) 3. Accept the Travelling Merchant quest 4. Save the game 5. Go from town to town until you find the Travelling Merchant ( if you don't find the Merchant in 15 days just reload the saved file and try again) 6. Try to buy the item he offers you, he will say you don't have enough money, but you will get the item and your money will be max out to 99M.