Constraints:
Steam 'cuz this is the last steam achievement I need
Vanilla no mods ditto
Turtle - I am no Speedy Gonzales!

Host: I can join multiplayer games no problem but I haven't figured out the ins and outs of setting up a VPN etc to be able to be a host myself.
Daytime/early evening: 10am to 8pm EST preferred; I just can't stay up that late any more (well not and be functional at the same time)
It would be awesome to have a big group - a chance to chat and cooperate with some of the amazing folks that hang out here - and I think we could have a blast while rocking this achievement. Hope you can make it!