Where is the invisible sniper nest?

[Kermit The Frog]

1 sniper nest in Tobruk and 3 sniper nests in the other 7 missions does not equal 23 sniper nests

[The Enigmatic Dr X]

Kermit,

I know the game is made by Rebellion, and I know that this is one of their sites, but I suspect you're more likely to get an answer^* on the Steam forums. This is really a comic website. Well comics and other stuff.

^* Well, a helpful answer that won't annoy you. We're more likely to suggest cheese to fix your woes. Seriously.

[M.I.K.]

You could also try asking here...  http://forum.sniperelite3.com/

[shaolin_monkey]

Try Gamefaqs also.

[I, Cosh]

Don't listen to these clowns, it's up my arse.

[Trout]

It should have a monkey in a hat. Then it would be good.

[The Enigmatic Dr X]

It should have a monkey in a hat. Then it would be good.

Fezist

[James Stacey]

Have you considered a liberal application of Gouda ?

[Spaceghost]

You have to wear the BLUE shoes, kill the aardvark, throw the cutlery down the stairs, then tell the Wizard who stole the peanuts.

Next, go to the castle, press right, right, up, down, A,B, left and start. Wait for 4 hours or until you hear a faint 'click', then reset the console, make a sandwich, brush your teeth and go outside. 

[Kermit The Frog]

Well at least somebody got the console part correct.