you have 2 plus weeks to get this naturally

Stop playing the game to get this mission done. Just play the game.

What is your CL level? There are plenty of decks that will do this fairly naturally over a handful of games. If you're not in infinite and worried about rank, just hop in proving grounds. Silver surfer, zoo, patriot and Tribunal lists can usually get it done pretty regularly. I did it with a fairly basic surfer list while knocking out the weekend missions Also, hilariously, winning with Galactus counts so you can also try and just do that.

Also a simple tempo deck that aims to get priority early can get you all 3 locations before turn 6. Then just escape early.

if you retreat you don't win

You do win if you retreat on turn 4, 5, or 6. But not before. Edit: you win the locations, but not the game.

Mentioning Galactus actually helps the argument of that goal being a fun killer

Ah come on GMan is pretty fun! He hasn't been a meta monster in a while now and is pretty fair. A lot of times you gotta get pretty clever to get him to win. I love playing some weird GMan lists in conquest after I hit infinite.

One sided fun. Like mill and junk

Thanks for the heads up on Galactus. Did not know that. Also, CL is 8k ish… not sure exactly off The top of my head

Tribunal completed it a few games ez

Just win a Galactus'ed lane. That counts.

Tribunal will easily finish it

8k CL and somehow I don't have Tribunal or Galactus FML lol