On the second stage you press and hold 1 to fire straight down. But if you press 1 before the slow motion ends, it changes the camera perspective and then the 1 key doesn't work for firing straight down which wastes your shot.

It's seriously annoying so let me turn it off. Also it's pretty stupid to use the same key to skip the end of the slow motion as the one to fire. It's too easy to accidentally fire a shot when you're just trying to skip the slow motion.

How do you play in the VR mode, doesn't seem to have actual VR controls?