By CGR Trailers
**NOTE** You don't need to worry about picking up all the items when fighting a boss. They don't count towards the Support Item stat (only those in the main level do). Nor does shooting the targets that open the side doors to pick up the items count as enemies for your Shot Down rate.Bosses in Rez have three forms: Tera, Giga, and Mega. The Tera form is the most difficult and Mega is the easiest. Which form you fight depends on your shot down rate.