This has got to be one of the hardest maps to get all 5 secret buttons :P. These 5 secret buttons open up a disco. There is also another secret on this map where u can get into the secret room next to the disco. Here is all the secrets of this map:

Secret Buttons and Disco:

THE SECRET BUTTONS MUST BE IN ORDER!!!

Press use (e by default) to press a secret button.

Secret Button Number 1: First be a coin and go through the teleport. There is a sign board with 3 buttons on. Two buttons release FM flares and the other lets coins out of the top. Press along the sign bored until your released.

Head to the very top of the air hockey table, above the place where you got released as a coin (you should have low gravity) and look for a secret button on top, then press it:

Secret Button Number 2: Be a blue soldier and head to the blue goal:

Down in the blue goal there is an invisible wall that has a vent in it (it is in the middle but slightly to the left):

Tip: To get into the vent (once you have found it) drop slowly off ducked and shoot the wall to blast yourself backwards into the vent.

The secret button is inside the vent:

Secret Button Number 3: This secret button is off the edge of the hockey table. It is to the left hand side of the red goal:

The secret button:

Secret Button Number 4: This secret button is on the side of the hockey table:

Drop onto it and press it (once you do this you will fall and die):

Secret Button Number 5: Be a red soldier and head to the red goal. This vent in on the left hand side of the red goal and you need to get into it the same way you got into the blue vent.

The secret button is inside the vent:

The Secret Activated text:

Be a coin again and get to the top vent* (you may need to get a boost from a friend):

*It is broken on my screenshot but originally it is not broken.

Break the vent, go down it and turn left, follow it round:

You will come to this button, press use on it:

Now head back out the vent and break the bottom vent:

This leads you to the disco room:

Secret room next to disco:

Back in the top vent there is a secret button where Time_Rift is now:

This opens up this wall, go through it and drop down:

You will come out in this room where you have control of the disco room (this is the room next to the disco room) and you can look at the cameras to see the rest of the map:

Letting the other teams into the coin part:

The final secret is this cigarette has a button at the end of it (the ash part). When it is pressed it opens up the coin part above it:

That concludes Fm_airhockey secrets.