- Estimated achievement difficulty: 3/10
- Offline: 37 
- Online: 3 
- Approximate amount of time to 1000: 30-40 Hours *See Note
- Minimum number of playthroughs needed: 2
- Missable achievements: Collectibles
- Does difficulty affect achievements: Yes
- Unobtainable/glitched achievements: No
- Extra equipment needed: No
It is possible to complete this game in under 20 hours if you know someone who has the Mac-10 and Double Barrel Shotgun unlocked and is willing to drop the weapons for you.
Battlefield: Hardline is a first-person shooter and a new entry in the Battlefield series focused on crime, heists and policing rather than military warfare seen in regular Battlefield titles. The game will take players through a series of campaign episodes presented as a television drama as well as many multiplayer options.
Battlefield veterans know the drill, although new players won't have much of an issue completing this game as it doesn't offer much of a challenge but does require a little time commitment.
Playthrough 1 - Officer/Veteran Difficulty + Collectibles + Level Specific Achievements:
You must play the game on Officer or Veteran difficulty in order to unlock the Hardline difficulty upon completion of the campaign, so it's recommended that you start with this difficulty.
During your initial playthrough, it's advised that you focus on the in-game collectibles as well in order to unlock all the achievements associated with warrants and case files:
- "Keep Digging, Detective" – Complete any case file in single-player.
- "True Detective" – Complete three case files in single-player.
- "World’s Greatest Detective" – Complete all case files in single-player.
- "Watched, Dawg" – Identify 10 warrants with the scanner in single-player.
- "Bring ‘em to Justice" – Capture all warrants alive in single-player.
You'll also want to make sure you focus on the following level specific achievements as you work your way through:
- Motley Crew (Ep. 1)
- Graceful Exit (Ep. 5)
- Their Own Medicine (Ep. 5)
- Knock Knock (Ep. 5)
- Hollywood Hideaway (Ep. 7)
- BYOB (Ep. 7)
- A Craftsman's Tools (Ep. 8)
- Real Action Hero (Ep. 9)
- Dare Devil (Ep. 10)
- Social Climber (Ep. 10)
Completing the game on your first time around while also going for everything else listed above should take you approximately eight hours, and you'll earn 36/40 achievements for 850.
Playthrough 2 - Hardline Difficulty:
After completing the game on Veteran difficulty, Hardline difficulty should be unlocked. Going through the game for a second time without worrying about collectibles or missable achievements should take you around five or six hours unlocking one achievement worth 50. This difficulty is a complete joke, and you should have very little problems. Keep in mind that stealth is your friend and most areas can be completely avoided if you just sneak around the outside straight towards your objective without interacting with any enemies.
There are a total of three multiplayer related achievements. You'll want to spend the beginning of your multiplayer journey in Blood Money and Heist game modes, making sure you win five of each to unlock the "The Big Score" achievement. Once you acquire a total of $21,000, you'll want to buy the T62 CEW secondary weapon and use it against 25 enemies in order to unlock "Electric Company." The bulk of your time will be spent getting the "Menz in the Hood" achievement that requires you to get kills with the Mac-10 and Double Barrel Shotgun. These guns can take anywhere from 12-20+ hours to unlock, and a decent amount of skill or teamwork. See additional tips below.
There's a chance that you may have missed an achievement along the way during your two playthroughs, so go back and make sure to mop-up anything that you may have missed.
Battlefield Hardline is a decently short completion and offers little single player replay value. Players who replay missions more than twice will probably rip their hair out because of the unskippable cutscenes. There are minimal skill intensive achievements standing between you and the completion, so enjoy your time with the online multiplayer and it'll be over before you know it!
[XBA would like to thank Maka for this Roadmap]