Hi everyone, a total noob here.
Not touching on the realism (so this is a pure gaming perspective), I gave this a 7. I played on regular and liked the balance, i.e. it was neither labour-intensive nor was it a walk in a park, but offered a decent amount of challenge. It also provided a bare bones guide for novices like myself. There were a few triggering/scripting errors to be found, but reloading solved those. I already started the second episode, which seems to have more interesting missions though.
Regards.