Im not sure how it fits into the theme.
The wall jumping was quite good. It took a couple tries to get a hang of it but then it was fine thanks to the grippy surface.
Graphics are very minimalistic. Could have a bit more detail. And sound effects would have been good.
I am pretty sure I collected all of them but there was no way to finish the level
Edit:
After looking again, I realised I missed one and the part where the colour appears. I was not expecting that twist lol! I get the theme now. You were not aware of what war crimes you were comitting. Wow!