Let's Look At Puzzle Quest
Puzzle quest is just like it sounds, a puzzle game with heavy rpg influences. You don't simply connect 3 to win by itself, you do so alongside of your character's abilities.
Knights tend to take the long haul route by just outlasting the enemy with reflecting damage, mitigating damage, healing it, and by being just plain stubborn.
Warriors tend to be more offensive than paladins but not nearly as survivable. On the flip side you do kill things a LOT faster, just not nearly as safely.
The druid class is a control class. I should know, my nemesis in puzzlequest mained a druid. They have a whole slew of spells to make your life a living nightmare.
I don't recall the wizard/ sorceress class all that well. I'd imagine they're squishier than the others but do a lot of damage to compensate. So TLDR: Glass cannon character.