On 0 servers with real players, out of 3 Steam servers that run it now, fakes and empty ones included. Checked 15:27 UTC.
acs2_assault is a community map, not one of the maps that come with the game. Servers send it to players from the Workshop when they join.
Over the last 30 days acs2_assault was the #1397 map on CS2 community servers, with <1 real players on it at any moment on average - 0% of everyone playing. It ran on about <1 servers with real players at a time. Right now 0 people play it on 0 servers. It is busiest on Wednesday around 18:00 UTC and quietest on Monday around 01:00 UTC.
Right now 0, on 0 servers from the Steam server list. Over the last 30 days it had <1 real players on average at any moment. Fake servers and bots are not counted, and Valve matchmaking is not in the list.
On Wednesday around 18:00 UTC. The grid above shows every hour of the week in your own time zone.
The busiest right now: New server by MyArena.ru (0 players), [ESP] teamhavefun.com (0 players), Klipz Ammo Dump (0 players). The full list is under "Servers running it now", and every server has its own page with its history.
de_mirage43,290 players on average
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sandstone_fb14,480 players on average
de_mirage_fps6,344 players on average
awp_lego_25,449 players on average
awp_lego_2_fb4,849 players on average
de_mirage_christmas2,856 players on average
<null>1,275 players on average
bhop_emevaelx31,054 players on average
duels_mirage_1x11,006 players on average
de_inferno888 players on average
de_nuke763 players on average