Powerlevel

Returning to the convention area later we find EQ and its players have reclaimed the PCs, presenting a row of T-shirt prints ranging from gangsta rap to Ghost In The Shell. Some play side by side, some frantically text distant servermates; others are powerlevelling with near-catatonic detachment.

Source: wiktionary

Whilst fighting close to your mentor (who must be around 5 levels higher than you) your attack and defense ratings are boosted - temporarily making you of a similar level. XP is still proportionate to your “real” level though, so don’t expect to be able to powerlevel this way.

Source: wiktionary

Trying to explore the Garden of Madness when you first enter it can be deadly if you haven’t been powerlevelling. […] The best way to powerlevel is usually to go find something big and dangerous, like a Stolas or a Final Guard, and pick on it until you level up.

Source: wiktionary

Though she’s a Level 100 character, she can be beaten if your troops are as low as Level 30. It’s a good idea, however, to take this battle on only when you really want to get drawn into a Dark World stage that you know you can beat. This is because once you’ve defeated her, certain normal stages may automatically pull you into a Dark World stage that you are too weak to clear, thereby blocking repeated access to that normal stage until the Dark World variant is cleared. This can be a problem if you’ve been using a certain stage to powerlevel.

Source: wiktionary