I was having to replay the same level over again after beating it. The lab level, and it wouldn't let me advance. Now the save doesn't load, it just has all 6 characters standing there...
To get easy mana during a campaign, wait until there is one enemy left that has a 2 turn activation. DON"T KILL HIM. On the turns he is about to attack, use all 'steps' on defense for 75%. On the other turn pick the colored blocks of the heroes that won't do damage to him. For example if the enemy is yellow, pick blue and purple colors. Heal when necessary. This will give you much more points to use on abilities during a campaign.
To solve impossible chests: Use your first few 'steps' to solve as much as you can, then when you still have some left use a 'refresh the field' scroll. It will give you a new field to easily solve the remaining colors.
The game isn't loading for me. Was playing it earlier today and now when I get on, it has a screen with credits for the game and an (ok) button at the bottom which doesn't work.
 "Zombie Tactics")
 "Eien")
 "New Star Soccer")
 "Dangerous adventure")