Feel free to comment with any info you find and I'll try to keep this updated.
Generators
There are 6 generators in the game. If you succesfully turn them on you get your points back. Costs shown below:
1 Player - 200
2 Players - 400
3 Players - 600
4 Players - 800
(thanks to Niek12)
Musical Parts
Part 1 - The Grammophone is found in the excavation site, it'll be on the floor when you go down the stairs.
Staff Parts (Records and components)
Part 1 (Red)
-- (Record) Missing
-- Missing
-- Missing
-- Missing
Part 2 (Yellow)
-- (Record) By Generator Station 5 on a ledge
-- Each of the 3 parts are in In one of the giant robots (How to get in giant robot)
Part 3 (Purple)
-- (Record) Missing
-- You need to ride the tank which is under the church to get the 3 purple parts, then you'll see a area you can jump on to get the first part (Its on the right side.) then after the tank takes a break halfway through the route and you continue to ride it there will be a part on the left and the last one will be on the right again. (Have to jump to both of them like the first part.)
Part 4 (Blue)
-- (Record) In the shelter next to Generator Shelter 2 on a shelf
-- All of the blue parts have to be dug up, they spawn randomly as far as I know.
Upon entering No Mans Land, turn left towards Generator Station 4. Right behind the first Excavation Site sign is the Record.
(thanks to Niek12 for most of the music/staff part info)
Maxis Drone
Part 1
-- Missing
Part 2
-- In Labratory (starting room) - always in this location
Part 3
-- Near the Excavation Site by the 4 statues where you build the staffs (thanks to Niek12)
Not sure which part this is:
In the muddy tank route near Juggernog
Zombie Shield
Part 1
-- By the "Fire" - Outside the first door to Generator Station 3 take an immediate left. Part is at the very end on a table.
-- Out first door to Generator Station 3 by the wheelbarrow in the tunnel straight ahead
Part 2
-- Missing
-- Missing
Part 3
-- By the wheelbarrow out the door to Generator 2 in the first tunnel
-- In wheelbarrow (w/ Zombie in it) past Generator 2 and past the No Mans Land door at the dead end
Guns / Equipment
Balista (500) - Starting Building by door to Station Generator 2
M14 (500) - Starting Room
B235 (1000) - Outside the Labratory towards Generator Station 3 (stay left)
B235 (1000) - Underneth the church
Semtex (250) - Heading towards Generator Station 3 take the last left before going into the Generator Station 3 door
AK74U (1200) - Below Generator Station 3 by the steps
MP40 (1200) - Straight out of the No Mans Land Exit near the Excavation Center
Claymores (1000) - Outside the Labratory towards Generator Station 2 in the first tunnel
Claymores (1000) - By Generator Station 5
Remington 870 MCS (900) - Outside the Labratory towards Generator Station 2 take the first left
Remington 870 MCS (900) - In the "Lightning" tunnel in No Mans Land by Generator Station 5. On the first landing.
MP40 (1300) - In the bunker next to Generator Station 2
STG44 (1400) - At the top of the church
Perks
Quick Revive (500) - In Starting Building by Generator 1
Speed Cola (3000) - In the mud by Generator 3
Stamin-Up (2000) - By Generator 5
Shovels
By first door to Generator Station 3 in starting building
"Wind" Ramp next to Generator Station 4 in No Mans Land going underground. At the bottom of the first landing to the left of the Buildable Table
Musical Easter Egg
Green glowing rock by the first door to Generator Station 3 in starting building
Green glowing rock under the shelves in No Mans Land building on the top level by the exit door
Green glowing rock by the Excavation Site when you walk up it and go left just before the part you can jump down (thanks to PFISH1)
Buildable Stations
Bottom level of No Mans Land building
"Wind" Ramp next to Generator 4 in No Mans Land going underground. At the bottom of the first landing is the Table
Underneath the church
Chest Locations (to fill Zombie souls)
-- After entering No Mans Land, turn left. Go past the Excavation site. The area at the bottom of the ramp has the chest.
-- Next to Generator 5
-- Just after the opening to the path to the church
-- Behind Juggernog
Myster Box Confirmed Items (initial list from timelordalex in another thread)
Monkeys
MG08
M1927
KSG
M1216
Skorpion Evo
Scar-H
Hamr
Galil
Five Sevens
Python
AK74u (with attachments such as extended clip)
B23R (with attachments such as extended clip)
MP40 (with attachments such as extended clip)
STG (with attachments such as extended clip)
War Machine (of course, how could it not return)
DSR
Staffs
The only one I have found was in a "dig" location. Anyone else find one somewhere?