Level 100

Total Experience Required 6,825,825

Level 100 progress: 100%

This is roughly the same as:

Killing 11,377 people in Warzone, or...
Killing 11,609 people in Execution, or...
Killing 9,641 people in Wingman, or...
Scoring 2,437,795 points in Guardian, or...
Scoring 7,419,375 points in Annex, or...
Scoring 4,490,675 points in Submission.

Horde (TU4)

Completing 17,065 waves on Casual, or...
Completing 11,377 waves on Normal, or...
Completing 8,533 waves on Hardcore, or...
Completing 6,826 waves on Insane.

Or a combination of the above. Have fun!