Level 10

Total Experience Required 13,576

Level 100 progress: 0.2%

This is roughly the same as:

Killing 46 people in Warzone, or...
Killing 47 people in Execution, or...
Killing 39 people in Wingman, or...
Scoring 9,698 points in Guardian, or...
Scoring 29,514 points in Annex, or...
Scoring 17,864 points in Submission.

Horde (TU4)

Completing 68 waves on Casual, or...
Completing 46 waves on Normal, or...
Completing 34 waves on Hardcore, or...
Completing 28 waves on Insane.

Or a combination of the above. Have fun!