What triggers class leveling in Dungeon Raid?
Solution 1:
Playing Normal mode, I've unlocked characters and levelled up classes fast(ish) using Big Game Hunter. You do need to kill a lot of special characters to level up classes, but in 8 games on the iphone, I have all classes unlocked, and the Mage levelled up to level 10.
I'd be intrigued to know what constitutes a high character level in a game on Normal mode? I tend to feel that hitting about 1000 turns, and character level of something over 200 is a good go - given that by that point all the items tend to be named things like 'legendary blah' and 'godly blah'.
In my experience the best combination of skills to get to this point is Heal, Repair, Dazzle and Big Game Hunter, with the Mage class. Shapeshifter's special ability plus Big Game Hunter means that you can kill a lot of special monsters fast.
Solution 2:
I think the developer posted the rules on the thread in the toucharcade forum somewhere:
1) You can't do it on easy
2) You get a trophy for every 15 or so specials/bosses you kill. I forget the exact number but it was around there.
3) The most you can unlock in one game is (3) and I've noticed it takes more special/boss kills to unlock the 2nd and 3rd in the same game
4) If you reach the maximum you can get in one game (and keep going) quite often the first one you kill the next game will get you one. So it seems you can still build towards the 10-15 special trigger... it just won't trigger after the third trophy until you start a new game.
5) Each trophy has a 50% chance to unlock a new class or 50% to level up the class you are playing. So if you're playing the adventurer (or a maxed out class) then every trophy unlocks a class. Likewise if you've unlocked all the classes every trophy levels up your class.
Solution 3:
Apparently on "easy" you don't unlock anything. Or so my brother says.
Solution 4:
After a certain number of special monsters killed, a trophy drops and this either levels up your current class or unlocks another one. Big Game Hunter does work to speed up this process