[Updated on August 21, 2024, to revise outdated formatting and improve readability.]
Valve has removed all achievements for CS:GO with the release of Counter-Strike 2. Launched as a free upgrade to its predecessor, CS2 only comes with one hidden Achievement, for some reason. All you have to do to unlock the CS2 hidden Achievement is to play any game mode. Start a game, wait for a moment, and you should get the “A New Beginning” Achievement with the description that reads, “This is Counter-Strike, too.”
Obviously, the name means that the series is starting from scratch again. Meanwhile, the description is a terrible pun of “two” and “too.” This fits perfectly with CS2‘s current state, considering all previous 100+ Achievements were wiped clean and the player base is feeling terrible about it.
Most players said that you don’t even have to complete a round to get it. But if the Achievement is still not unlocked, try completing at least one round. It should appear after you start the next round. It’s very easy to unlock this CS2 hidden Achievement since it works with any game mode. For example, you can just start a Deathmatch with bots and then immediately quit the game to unlock it.