After much raging and yelling I've gotten it to 3 'bats' so glad to have finished it. practice practice practice
Winding down the achievement hunting...
95%+ Completion (142/164 games complete w/ DLC (Most Recent: Trials Fusion for the 360)
Halo Fanatic: All Gamerscore (Including DLC) in Halo CEA, 2, 3, 4, ODST, Reach, and Spartan Assault (360, X1, and W8)