Era

Spoiler warning! This article contains spoilers about Era content.

Era is a phase of the game which opens up at Military Tier 8. Era begins when the player reaches wave 100B in endless mode on any difficulty of a given region.

Upon reaching Era, enemies gain an Era shield and various Era powers, depending on their element.

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Every time you hit wave 100b, the era counter increases by 1. For example, if you are in era 5 and hit wave 100b, your era increases to 6.

There are several ways to combat the era enemies' shield and various powers, which most are found in Workshop-->Stairs

Tab 1

In the first tab of the stairs, you will find various bars, 2 for each element to fill. In order to fill these bars, you must kill era enemies of that element and get hit by them (You must take at least 0.1 damage to count as a hit) during tower testing. Once a bar is filled for an element, you can reveal it to find out one of the element's era powers. When both bars are revealed for one element, that element may now be disabled and will appear in tab 2 and unlock tab 2 if you haven't already done so. You may need to reach era in different regions if you want to reveal all the elements.