Juggling is the single best tactic for Castle Crashers, especially on insane mode.

This group's dedicated to teaching all of the new players how to juggle. It also has a very corny name that probably makes you want to puke. The Administrator rank includes people who've mastered juggling. The Moderator rank includes people who're qualified to teach juggling. If you're interested in becoming a moderator/administrator, then don't hesitate to contact Aichomancer.

There's a link to Aichomancer's YouTube Channel, since he has a Castle Crashers Let's Play that shows juggling at its finest.
There's also a link to Aichomancer's profile on the wiki, but you can find the juggling page here: http://castlecrashers.wikia.com/wiki/Juggling

Aichomancer's Profile[http//steamcommunity]
Aichomancer's Youtube Channel (Fencer Pwns)
Aichomancer's Wikia Profile (Fencer Pwns)[castlecrashers.wikia.com]