I've beaten the game now and even if you beat every mission, you still won't have enough crystals to buy everything in the shop, so that needs some adjusting. I suggest either simply allowing people to choose the characters they want for the main missions or reward crystals for beating the side quests. Buying the option from the shop should also allow you to pick which pets you want to bring.
The vampire seems like a good idea, but I just couldn't make it work in practice. I used him with a paladin, priest, and the option that healed your party between rounds, and I still couldn't keep him alive. The problem is that the healers really levels quick to buff up their special, but if the vampire waits around for them to finish things off, he'll run out of health. Using his stance that doubles his health drain is just way too much.
The only way that I see to to survive some of the boss fights is use a rogue, the pet that turns the items you steal into potions, and a warrior with a ton of health to make effective use of the potions. I would have liked to try the apprentice, but he's not going to survive without the warrior, I'm not going to survive boss fights without the rogue, and the third character needs to be a healer. I won't even make it to the boss if my rogue isn't feeding the pet that gives exp. When you need to have a specific combination of characters and pets, it becomes important not to delay giving players the option of choosing.
Soyeong
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