Personally, I am what they call an Achievement-whore or [Formally] a completionist... But Battlefield 3 has taken that to a whole new level.
I think Battlefield 3 has about 367 total available dog tags to obtain. I know some of them are not possible to get anymore (Dr. Pepper promo, etc) - but there are some that via math, I have determined will take a very long time to obtain.
There are co-op service star dog tags at 1, 5, 10, 20, and 50. From what I have found:
- You'll need 22,000,000 co-op points for service star 50
- Debatable The best level for grinding co-op points is Hit & Run, which can be done for ~10k points in 7min
- You'll have to play that level 2,200 times and spend about 260hr doing it.[Source]
Is there a better way to grind out the co-op? Seeing as they only have a few missions, at 260hrs... I don't think I will have that kind of endurance to obtain those dog tags...