When a character reaches level 20, the next step is to start maxing out its eight stats to aid in survival and dealing damage. This page is a guide to how Stat Increase Potions can be acquired.
Stat Increase Potions each increase your stat by 1 with the exception of Life and Mana, which increase by 5. This page explains how your stats affect your character.
Before you start using potions, check your stats and compare them to their maxed values. If you’re rolling for good HP/MP, you may want to kill the character if its stats are too low by level 20.
There are multiple methods of maxing a character. Note that all can be supplemented by trading high-tiered equipment for potions. For this, refer to the trader’s etiquette.
If you want to be safe and not risk the death of your main character dying, make a secondary account (or purchase another character slot) and use it to obtain potions and equipment for your main character. As the secondary account will remain unmaxed, there is very little loss involved upon death besides the equipment. Thus, the process can be easily repeated until you are maxed.
Godlands farming is relatively safe, but yields low rewards given the fairly low drop rate of potions. ATT, DEF, and SPD can all be acquired this way, but not reliably.
Dungeon farming can be more dangerous, but is more reliable given that most bosses have a 100% drop rate of a particular potion; the trick is getting enough damage in. Sprite Worlds give DEX mainly and DEF at a low rate(and ATT, thanks to the Native Sprite Gods), Snake Pits give SPD, and Undead Lairs give WIS; all can be found and soloed fairly easily. Other dungeons yield more rewards (such as the Abyss of Demons) but are more difficult. Selling these potions for other potions you need to max is a well-used strategy, most notably by ‘Abyss farmers’ who seemingly perpetually run Abysses to get enough DEF to buy whatever item they want/need.
The question of what order to max in is common, and rightly so, as it is very important for survival! There is no correct order for maxing, and it varies by class.
Guides to these dungeons can be found here. Other drop locations are available at the Potions page.