"While Payday crashes or is playable without being able to spot special unit in loud, I began playing Payday: The Heist which is a very good game.
There are no stealth mechanisms similar to the Payday 2 ones but you can still kind of stealth beginnings of some maps. The Diamond Heist is one of them and there is an achievement consisting in gathering 10 sapphires.

I hope you will enjoy it :)"