hi guys you can get the cold war achievement using this server from Headshot also you can get the gift grab achievement using the below guide

here's the link of the guide for the gift grab achievement that contains the ip server : https://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=3558483655

and here's the ip server if your too lazy:
Headshot Achievement Gift Grab Server
IP: 185.180.2.39:27279

well it's easy
first join the server
then you should go on terrorist side if the map is about planting bomb and just play the game until the server give you the bomb

(in the server option ''the bots prefer to human for goals'' is on so its not gonna give you the bomb at the firs round you should play 4 or 5 round's to get the bomb just kill the enemies and don't try to kill the bomber you get kicked out)

when you get the bomb don't kill anyone just go plant the bomb and wait for it to explode and don't get yourself killed that's how you get it

and if the map is about hostage's pick ct side and just go rescue the hostage's without killing anyone that's it
if there's any problem let me know in the comment's
and i'm gonna thank the headshot for being nice and letting me mentioning he's server