First class: Any primary, one man army, danger close, any third perk, claymore.
Second class: Any primary, one man army, danger close, any third perk, C4.
This class is so fun to use, i went 31-6 using it on bailout. Just camp in a building of your choice putting a claymore at the top of the stairs and then use one man army, switch to the c4 class and place a c4 in front of the claymore for a bigger explosion. Reminder* you can only have 2 clamores and 2 c4's out at once.
Have Fun!