Quest #43 - Crystal God

[darkange]

so this means that with how the game is now ... it is impossible to complete all 54 side quests even if you did everything perfectly.

[reed199]

I really need help. I got the items from the chest behind the blue barrier, and I have tried a combination of the available boosts, but Busho's team still won't get close enough to the crystal god to fight. What do I do?

[Lady JJ]

I really need help. I got the items from the chest behind the blue barrier, and I have tried a combination of the available boosts, but Busho's team still won't get close enough to the crystal god to fight. What do I do?

There is a walkthrough at https://www.aldorlea.org/officialsite/phpBB3/viewtopic.php?f=226&t=9921 but the tldr version is - revisit Susannah to get cold protection and then use potions to increase everyone's mdf+1.