the watch pops off his wrist and fades as this is the first sign that ely is responsible for diverting the power of the watch

darcs death is the result of him saving ely

after darc dies for real the watch falls off his wrist and does not move. the light slowly fades from it and this is what ely realises and thus when she knows she can divert the watches power

probably not at gates or facility?

ely sets darc free from his paradoxical loop

why are they at the facility in the first place?? cause they cant be helping fateus so they must be fighting him?

Darc (Metradome) → Die from Zipher & Scatyker (Facility, Anyth)