1. Run the game.
2. Kill enemies(try your best to headshot).
3. After about 10 minutes, close the game and forget about it.
4. Have a wonderful day!

NOTE There is a small chance you will start getting achievements only after you killed 300-700 and most being headshots, but once the achievements start popping, you will get same or more achievements then you have kills. so don't worry.

If you find this guide helpful, I`ll appreciate it if you upvote it and you can check my other Guides.

If i made a mistake, please let me know. I`ll fix it as soon as possible.
If you got a question or suggestion, feel free to leave it in comments and ill consider adding it.

Thank you.