Level 33

Total Experience Required 171,380

Level 100 progress: 2.51%

This is roughly the same as:

Killing 286 people in Warzone, or...
Killing 292 people in Execution, or...
Killing 243 people in Wingman, or...
Scoring 61,208 points in Guardian, or...
Scoring 186,283 points in Annex, or...
Scoring 112,750 points in Submission.

Horde (TU4)

Completing 429 waves on Casual, or...
Completing 286 waves on Normal, or...
Completing 215 waves on Hardcore, or...
Completing 172 waves on Insane.

Or a combination of the above. Have fun!