Mark and I cleared a bunch of achievements I never thought I'd do in Borderlands 2. We beat several RAID bosses co-op and discovered every area and did every side mission in the main game. We also both found Donkey Mong. Now I'm working on the old DLC again, going for total completion. 

I finished the main story of Tiny Tina's Assault on Dragon Keep. I then realized that I had already done the achievements for all missions and areas. So Mark and I beat the last round of Murderline's Temple together to finish everything (It's an area battle arena). Then I moved on to another one. 

I started Sir Hamlock's Big Game Hunt and beat the main quest line. Then Mark and I went in together to beat the RAID boss and won. Mark's like level 58 and has a lot of great equipment. I was just there as a level 40 to get credit for the kill. These RAID bosses were previously impossible without four players. It seems like these remastered versions of the game have made it slightly easier for two people to do them. I've noticed some other super rare things aren't so crazy rare anymore, like Donkey Mong (it's still pretty rare though). I greatly appriciate some of these tweaks. 

Next I will do all the side missions and areas in Hamerlock's Big Game Hunt and then the other DLCs. I'm also working on getting level 1 on all the challenges as I play. I've been switching gear around to get the gear related ones. It's fun but the list is long. I hope I can get them all.