I want to unlock the infinite rocketlauncher. I was wondering how it calibrates the under 5 hours things. Does it need to be in one play through? Can you go and play another level and then come back to where you were in level select (assuming it's my first time doing it on veteran)?
Or is it just if your best times are under 5 hours?

Its if your best times on every level accumalate to under 5 hours. That means you dont have to do this in one playthrough. Its quite easy to do with something that has infinite ammo

Thanks alot. Yeah, I just got infinite ammo on the Deagle, makes it so much easier.

you just have to shave time on individual levels until it says five

woot. 4:12

i just did it on easy mode with all my infinite ammo weapons. Got the infite RPG without even knowing it