Reached level 40 today! Just ten more to go and I can select a Specialization. The last few missions were a little rough as I was joined with less than honorable teammates. One mission a couple of the members sat and did absolutely nothing the entire time which forced me and another Spartan to handle the entire load. We did a good job but it caused the mission to last twice as long as it normally would. The final mission that put me over 40 had a member who thought it a good idea to sit in a gun turret and pick off his teammates. Despite these hinderances I got through it all in good form and am now headed down the homestretch toward 50...
All I have to say about those people who don't participate within the spirit of the game is: Not very Mjolnir of them... :)