Players pick from three classes at the beginning of the game to determine an overarching play style: Engineer, Protector and Destroyer. From there, complete customization is accomplished through the comprehensive skill tree containing over 80 abilities. It's possible to head in the direction of specific strengths or create an all-arounder with this method, giving the action game an identifying RPG component. View the video here.
After climbing to the next level, skill points are awarded to unlock abilities freely within the tree. Each class brings with it a unique skill tree - The Engineer breaks off into three sub-classes with various types of abilities: Tinker, Atlanticus and Buoy Master. Atlantics aids in healing friendly units, Tinker specializes in debuffing enemy skills, and Buoy Master attacks individual enemies, or accelerates allied units.