Just posted a good long reply, but lost the fooking connection from my phone 
It is worth playing through the campaign but I feel no need or want, to go back and farm cheveos.
It containes 6 chapters in all and all have a big boss battle at the end.

It is worth playing through the campaign but I feel no need or want, to go back and farm cheveos.
It containes 6 chapters in all and all have a big boss battle at the end.
"Duffman is thrusting in the direction of the problem! Oh, yeah!"
