Pros:

+ Looks Really Good
+ Not In The Way
+ Realistic
+ Awesome Animation

Cons:

Nothing to report, so far everything seems to be working fine :)

Conclusion:

An awesome upgrade from the default M16, if you want the default look but would like some improvements, this is for you!

Pros:

- Amazing Athmosphere
- Absolutely No Bugs or Errors
- Pretty Fast Paced But Not Too fast
- Not Too Hard And Not Too Easy
- Good Weapon And Health Kit Placement

Cons:

- Very Bad Machinegun Placement

Conclusion:

I played through this alone on Advanced and it was a reallt great experience overall, by far one of my favorite mod-campaigns :)
I really recommend this for anyone, for best experience play on Advanced ;)
And one more thing, this might be just me, but i tend to take in the athmosphere better and be more invested in to the game when playing alone, so that's something you might want to try :)