you can't without a glich, try going on tyrant baal level, then send all your goblins and the 1st hero to him, sned 8 epic tanks off the screen (click far away) and lighning strike your own base 17 times very quickly, it will flash, and you will be transported to the cave level, it will be very very very very easy.
beat level 12
beat the last level
By conquering the world, then being someone else and conquering the world and doing that over and over until you've done that with every single person and you might need to beat cave of trial to unlock some stuff too, but i don't know yet.in each cave of trial you beat you get a titan or card.
anything but magic magic attacks heal them so only use magic when the red goblins are not around
One is Gem Craft Chapter 0
cave of trial and you have to win
complete the cave of trial missions
You have to beat all the levels and you MUST see the ending.
beat level 12
Beat 12 Level
beat the last level
you have to have good health and attack
By conquering the world, then being someone else and conquering the world and doing that over and over until you've done that with every single person and you might need to beat cave of trial to unlock some stuff too, but i don't know yet.in each cave of trial you beat you get a titan or card.
anything but magic magic attacks heal them so only use magic when the red goblins are not around
The Trojan War.
One is Gem Craft Chapter 0
there are no cheats but a really good strategy is to complete the characters until you have all the distance attackers at level five. then go into battle and hold back until all your fighters are on the screen. then go in strong and fire off your abilities like ice and lightning and meteors. when you hear the gong you will know that a counter attack is coming an retreat while blasting his army with meteors and a phoenix. then strike again, this is a full proof strategy that works for all battles except cave of trials number 5. for more help look up tass, she has great videos on help and suggestions.