My Theories about the Origins Achievements

Little Lost Girl - In Origins, release Samantha.
1) Obviously the Easter Egg.
2) Weird because Samantha was born in WWII era, but this takes place in WWI France.
3) Might explain the tables from the other maps and how they might be a form of teleportation or, more likely, time travel.
4) Even though the devs are the same team as the ones from Mob of the Dead, this will probably be a 4-player Easter Egg.

Not a Gold Digger - In Origins, share a weapon you dug up.
1) Sounds like it requires a 2nd person.
2) Probably something really simple considering it's only worth 5G and will likely be obtainable in the spawn room or close to it.

Kung Fu Grip - In Origins, free yourself and another from the Panzer Soldats claw in one game.
1) Panzer Soldat is the giant robot.
2) You will probably only to be able to break free from the grip using one of the "elemental staffs."

Playing with Power - In Origins, build all elemental staffs in one game.
1) The elemental staffs are ice, fire, wind, and water.
2) The elemental staffs might not be staffs, but instead, the wonder weapons.
3) If they are wonder weapons, they might bring back the Winter's Howl, the Thunder Gun, and/or the Wind Gun from Tranzit.
4) Possibly a step of the Easter Egg.

All Your Base - In Origins, activate all generators without allowing one to stop.
1) You will probably need four people.
2) Possibly a step in the Easter Egg to have all four running at the same time.
3) Power might come from the elemental staffs.

I'm on a Tank! - In Origins, ride the tank around the map without getting off.
1) Sounds simple enough if it doesn't require fuel (in which case, a friend would have to get some while you ride) and if someone holds a zombie.

Saving the Day... All Day - In Origins, revive another player four different ways in one game.
1) We only know 2 ways so far. Krauss Defibrillator and normal Revives.
2) I think it's safe to assume that the Ballistic Knife will be making a return.
3) Zombie Blood might be a way of disguise only that does not count or it might be a 3rd method of revive.

Master of Disguise - In Origins, use Zombie Blood to revive three players and activate a generator in one game.
1) Sounds like it will require 4 people in total (3 others).
2) Zombie Blood is the new perk.
3) Zombie Blood may act like Vulture's Aid in that there are ways to remain hidden from zombies.
4) The perk may allow you to blend in with zombies at certain times.
5) The perk is probably more than just a method of disguise.

Overachiever - In Origins, complete all 4 Challenges in one game.
1) Only thing I could guess is that each of the four main characters has their own challenge.
2) Might also be a step of the Easter Egg.

Master Wizard - In Origins, wield all of the ultimate staffs in one game.
1) It sounds like each staff may only be able to be picked up once.
2) They might be wonder weapons.
3) If the Easter Egg might require each player to have a staff, then this might mean the Easter Egg will be unobtainable in the games that this achievement is unlocked, assuming each staff can only be picked up once.

General Theory: Each player might start in a different area and have to meet each other in the middle of the map.

Any thoughts? Comments?