"Complete wave 4" is an objective in the sidequest Hyperion Slaughter: Round 2 in Borderlands 2
Walkthrough[edit]
This fourth wave has a few Combat Engineers for you to deal with. Then it is quickly revealed there are also some Hyperion Snipers on the field as well. This is your second best chance to work on the optional objective if only because humans are a little easier to deal with. Keep to cover and use it to your advantage when dealing with Snipers.
