Bulletstorm Campaign

[Casterina]

I have finished the Bulletstorm campaign on Normal but I didn't get the achievement, I done every chapter, the reason I know is that everytime I go off the game, I let it load to a checkpoint and then I quit to Bulletstorm menu and then either Xbox Dashboard or turn off the console, is there any way I can get this achievement without doing campaign again?

[Rajeanero]

Have you perhaps change the Difficulty during one Chapter?

[dunc t]

i have the same problem.. never changed difficulty and played through the game on normal but didn't get any completion achieve...

[Veedrock]

Go into the Level Select (whatever it's called) and make sure you can choose every Act/Level. Some people played through the campaign but one of the Acts was still locked for some reason, and after replaying through that it popped.