Grapple Hook- The Hook allows you to get to high places faster.
Jet Pack- the ability to fly during combat gives you an edge over your opponents.
Ghost- the ability to go invisible for one turn or until you attack. You can use this 3 times per mission and perform any actions except attack.
Psychic- This armor give you the ability to make your spells do 50% more damage for 5 turns. You can use this once per mission.