POPGOES Arcade in POPGOES

I have two problems

1. after a battle sometimes the screen will flash white

2. I defeated corrupt bb but when I did he was left with 1 hp

I only got 72% when I beat PA2020, but thats fine. I don't usually go for Secret endings

Had an idea for a new, evil ending.

I finally completed Popgoes Arcade 2020 edition. So far I beat all 3 Popgoes Arcade games. Maybe I'll try the actual game itself.

Edit: I beat Night 1 in Popgoes. It was kinda easy.

https://www.youtube.com/watch?v=qUgbZyqxzwY

pa2020 part 1 (spoilers!!!)

(PA2020 SPOILERS!!)

My theory about the dead animals.

While this is fanart, Its also spoilers for pa2020 so im posting this here instead lol. Working on some Dead King Freddy art since his design is *really* cool!

That 100% completion ending though..

I cannot for the life of me find the final emerald coin
I looked everywhere i could, and I think the one coin i dont have is the very last thing i need to 100%

I have a problem. So I have the Blue Castle Key and the Yellow Castle Key, but not the Red Castle Key. I am clueless on where it is. Can someone give me an idea of where it is?