Level 11

Total Experience Required 15,932

Level 100 progress: 0.23%

This is roughly the same as:

Killing 27 people in Warzone, or...
Killing 28 people in Execution, or...
Killing 23 people in Wingman, or...
Scoring 5,690 points in Guardian, or...
Scoring 17,318 points in Annex, or...
Scoring 10,482 points in Submission.

Horde (TU4)

Completing 40 waves on Casual, or...
Completing 27 waves on Normal, or...
Completing 20 waves on Hardcore, or...
Completing 16 waves on Insane.

Or a combination of the above. Have fun!