You should understand that the Russians have performed spacewalks while aboard Mir and while they were only 2 of them, both performing the spacewalks. They also did it aboard Salyut 6 and 7.

Grtechko and Romanenko perfomed a spacewalk aboard Salyut 6, so did Kovalenok and Ivantchenko, Lyakov and Ryumin.
With Salyut 7: Berezovoi and Lebedev, Djanibekov and Savinikh, Kizim and Soloviev ttwice)
With Mir: Romanenko and Laveikin (3 times).
Titov and Manarov (3 times):
Viktorenko and Serebrov: 5 times!!
Soloviev and Balandin (twice with a harrowing experience: unable to return back in the hatch they came out from).
Etc.....
Plenty of sources here

Raoul.