Summary[]

Experience, commonly known as XP, is gained by battling enemies. Filling up the experience bar fully will cause a player to level up, giving them the opportunity to increase their stats.
Experience points are rewarded to the player for every time they hit an enemy. On Insane Mode, more experience is gained due to enemies having a greater amount of health. Many players refrain from leveling up their Strength skill too much, seeing as if they do less damage, they will hit the enemy more, thus giving them more experience.

Experience gain as shown in the Level Up section of How to Play.
There is an Experience glitch that has not been patched for the Xbox 360 and PlayStation 3 versions. To perform the glitch, the player needs to head to the Industrial Castle and fight their way to the end. When the player reaches the boss fight with the Industrial Machine, it is recommended that the hand and gun are destroyed before starting, so the player can focus on getting the experience. After this is done, the player needs to throw the Boomerang before an electric pillar rises and have the Boomerang catch it on the way back. This will result in the Boomerang getting stuck behind the pillar and repeatedly dealing 1 damage very fast. The player can do this for all five of the electric pillars. On Normal Mode, all five spires give 200 XP, totaling in 1000. The result is significantly bigger on Insane Mode thanks to the "X10 Rule", with each node having 2000 health each and totaling to 10,000 XP. The only downside to this method is that after the boss is defeated, you'll have to fight through the level all over again. This glitch has been patched on the PC version and does not work on the Remastered versions.

A player using the Boomerang to gain Experience.
A good strategy is to keep some of your skills low (if you're planning on becoming a melee fighter, upgrade Strength, but use your Magic or Bow instead) so you can level up quicker. Use your strongest skill when you're in a tough fight or are in a rush to get the level done. To get extra experience, you could use Giraffey, who gives you 10% more experience. A good strategy for characters with elemental splash Magic would be to use your splash attack magic on the Cult Minions in the Wizard Castle Interior level, however you must remember to dodge and keep your distance.
Trivia[]
- For every level you gain, it will take more experience to level up again.
- Each of the four skills has 24 skill levels, so a total of 96 skill points will fully upgrade each skill area. Players must reach level 78 to fully upgrade their character's attributes. All levels higher than 78 will only increase health and melee/magic damage; while the latter two are only boosted twice more, at level 80 and level 90.
- Every ten levels, the level will add not only health, but also melee/magic damage as well, with the stopping point being at Level 90.

A player with all maxed stats
- Each level before level 21 will give you 2 points to allot. Every level from 21 and beyond only gives one attribute point.
- You earn 1 XP per hit. With Giraffey you earn 1.1 XP per hit.
- Any pet that damages enemies yields XP, but Hawkster is the only one that has a visible impact on it.
- See Experience per Level for details on the amount of XP required to reach each level.