Level 19

Total Experience Required 44,497

Level 100 progress: 0.65%

This is roughly the same as:

Killing 75 people in Warzone, or...
Killing 76 people in Execution, or...
Killing 63 people in Wingman, or...
Scoring 15,892 points in Guardian, or...
Scoring 48,367 points in Annex, or...
Scoring 29,275 points in Submission.

Horde (TU4)

Completing 112 waves on Casual, or...
Completing 75 waves on Normal, or...
Completing 56 waves on Hardcore, or...
Completing 45 waves on Insane.

Or a combination of the above. Have fun!