Mission and Clear Conditions:
Farm all the Grenades
- 1 Dummy Echelon
Not much to say here, just run to the Supply Crate, collect your 10 Frag Grenades, and restart. Repeat as needed.
At some point over the Event you'll want to farm 404 Grenades for an Achievement, but there isn't any reason to do it right this very second. I'd recommend farming them in 100 Grenade increments, thanks to the Box dropping them 10 at a time. Or you can farm a couple hundred and see how many you use.