Mass Effect 3′s latest N7 Bounty Weekend, Operation Lodestar, started yesterday and the individual challenge this time out is tiered.
According to a notice from Admiral Steven Hackett, the largest-scale attack yet is being coordinated. When an objective is finished or a target destroyed, players will immediately start on the next one.
The tiered individual goal is as follows:
1st tier: Participation earns the 1st-tier reward of a Commendation Pack.
2nd tier: Extracting against all four enemy factions on Silver difficulty or higher earns the 2nd-tier reward of a second bonus Commendation Pack and a banner: “Stood Fast, Stood Strong, Stood Together”.
3rd tier: Extracting against all four every enemy factions on Platinum difficulty earns the 3rd-tier reward of a bonus Commendation Pack.
You read up on what the Bounty Weekend entails through the link.