space to stop auto start normal: weak scavengers that try to invade the fort for iron strong: instead of using the chains they find for speed they use it to have protection boss: instead of making more defence or speed they prioritized attack (with some bonus defence due to the amount of energy they use if the enemy's seem too strong just remember the iron the city makes it very very reinforced and their balls of energy the only why their even able to hit them is because of the extractors that infuse the guards weapons with the same energy and also their massive because they wore so much armor by the time they were an adult they could break other city's armor (also how much weight armor has varies on age) they had to have strong muscles and bones to be able to move so through out the years of the fort the people born there have adapted and naturally are strong their also highly trained soldiers. anything that can produce a high amount of concentrated different energy can hit but anything of the same amount of energy will do more damage and no matter the concentration of it it will hit. added this because of khat (ty I needed to make this paragraph