Need advice for the last part of Ex Oblivion

I plan to master Ex Oblivion, and I really like the explosive end, but I find a bit sketchy...

Specificaly how it begin for the player. Like, there is no real beginning to this end for the player (if it's make sense ?) and it's a bit confusing. There some gunshot and then it's the apocalypse ?

I thought about adding March doing a announcement for the Agents on speakers on the streets to play with them and scare the shit out of them, but I dont know if it's a good idea...

What do you think ?

Thank you very much for your time !