(adsbygoogle = window.adsbygoogle || []).push({}); Step 1: Invite a friend & Start up a Hardcore Gamemode I recommend domination.
Step 2: Find a spot on the map where you and your friend can hide.
Step 3: Put your riot Shield on your back and pull out your secondary.
Step 4: Have your friend get behind you and shoot you in the riot shield as long as you have your secondary out it will rank it up.

Notes: I think this will only work with the absorb so much damage challenge.

no it worked for me while on same team

so does it have to be in a Hardcore game mode? I know you can use your split screen

---------- Post added at 04:50 PM ---------- Previous post was at 04:04 PM ----------

your weapon stops leveling up once you complete the SPONGE:lll challenge & thats Absorbing 50,000 damage with your riot shield & thats easy it takes 2 hardcore domination matches to complete :/ cause my striker stopped leveling up on the 3rd match