Temporal Archive one shot?

So the final boss in temporal archive generates a threat that fills the ENTIRE arena and one shots me… WTF? What is the process to handle this?

Switch eras (press D) before it goes boom.

Yeah, the entire center is a clock so when it finishes it countdown is goes off, you press D before that happens. The best way to handle it normally is press D right before it goes off, then press D again to go back.

Oh, was only using that to get around the gates. never even thought to use it to avoid a one shot mechanic. Thanks