Mafia III: Definitive Edition has 85 Steam achievements across the base campaign and the three included story DLCs. A clean completion plan uses two base-game decision routes: one recruits racket bosses and keeps all three underbosses loyal; the other kills racket bosses and favors a single underboss. Cumulative combat actions, driving feats, and DLC systems can be divided between them.
The October 8, 2026 Steam update explicitly improved achievement tracking. Treat guides demanding an uninterrupted marathon, depot downgrade, or imported saves as historical workarounds until fresh testing shows they are still necessary.
Set up the completion file
Enable Steam Cloud but also keep dated local backups. Save before each district sit-down, before the final church choice, and before the last step of a long DLC business. Cloud synchronization protects availability across devices; it does not give you a user-friendly list of old decision points.
Run A: recruit and balance
Wiretap boss sectors, recruit available racket bosses, distribute districts evenly, and complete all three underboss favor chains.
Run B: kill and favor one
Kill racket bosses consistently, award the six contested districts to one chosen leader, and accept the betrayal outcomes.
DLC cleanup
Finish Faster, Baby!, Stones Unturned, and Sign of the Times on the stronger save, then complete Herbalism and Sammy's renovation.
Cumulative cleanup
Track takedowns, weapon actions, vehicle feats, cash spending, and other repeatable requirements during ordinary missions.
Use the Steam achievement page for exact names and current unlock state. Xbox or PlayStation guides are excellent route references, but their point values and platform behavior are not Steam proof.
Run A: preserve the organization
Collect TL-49 fuses and wiretap the sector containing every recruitable racket boss. Choose the recruit response to progress The New Boss. Record each decision because a missing wiretap can silently force the opposite outcome.
Give Cassandra, Vito, and Burke two of the six contested districts each, on top of their starting territory. Assign both rackets to the intended final recipient before the sit-down. Complete their personal favor chains as they unlock for Family, and keep everyone alive for the coalition-related achievements.
This is the best file for optional exploration and DLC. It preserves all associate services, gives broad access to perks, and supports the rule-together ending. Collectibles are not a universal 85-achievement requirement, so consult the exact list before committing to all 160 base-game pickups.
Run B: make every opposing choice clear
Skip the recruit setup only if the current boss must die; choose kill consistently for No Loose Ends. Still use junction boxes where their map information helps, but do not press the recruit response by habit.
Award all six contested districts to one chosen underboss for the single-partner political route. Other leaders will protest and can eventually rebel. That consequence is intentional for achievements such as Just You and Me; it should not be mixed into the balanced save.
Run B can be faster because optional favor and collection work already exists on Run A. Focus on required racket damage, story targets, the opposite choices, and any cumulative actions that remain unfinished.
Fold cumulative achievements into normal play
Use stealth takedowns while scouting rackets, explosives against clustered vehicles, and the required firearm types during ordinary compounds. Rotate actions deliberately instead of saving hundreds of repetitions for an empty post-game map.
Spend and bank money with achievement thresholds in mind, but do not carry a dangerous balance merely to watch the total rise. Racket earn, races, and Herbalism can fund late purchases safely.
Driving and pursuit achievements are easier with a delivered, repaired car and a manual save. Attempt them on a clear road after banking cash. Reloading after a failed stunt is less costly than rebuilding money and armor.
Complete the three DLC lists
Faster, Baby! includes story achievements, driving or trap-based actions, and the Herbalism progression. Finish the story, rank the grow house, hybridize useful strains, and preserve a save before the high-value sale.
Stones Unturned is more linear. Complete Donovan’s campaign and its optional post-story activities, using a fully supplied base-game save for the combat-heavy sequences.
Sign of the Times adds investigative story achievements and Pour Sammy! for completing the $186,000 bar restoration. Finish Aunt Lily’s two gated missions before expecting the final upgrades to appear.
Handle an achievement that does not unlock
Confirm Steam is online, the game is updated, and the overlay can display notifications. Compare the exact Steam condition with what occurred; a similarly named mission, trophy, or Xbox requirement may not match.
Perform one fresh qualifying action on the October 2026 build. For a cumulative condition, continue from a clean save and exit normally after an autosave. Verify installed files before using a backup.
Never begin with Steam Achievement Manager, an unknown save, or an executable downgrade. Those methods can obscure whether the official fix works and may compromise a legitimate completion record.
Final 85-of-85 audit
Sort the Steam list into base story, choice, cumulative, Faster, Baby!, Stones Unturned, and Sign of the Times. Check every locked item against the save designed for it. A “missable” label means the current decision path can pass the condition; it does not necessarily mean the account is permanently locked out.
Keep the completed local save folder after Steam reports 85 of 85. Allow Cloud synchronization to finish before uninstalling. If the total is 84, identify the exact locked name and troubleshoot that condition rather than repeating the whole campaign without evidence.
Sources and verification
- Steam achievement list for AppID 360430 — exact platform achievement inventory.
- TrueAchievements complete walkthrough — independent two-playthrough, missable, cumulative, and DLC route reference.
- Mafia III achievement road map — decision conflicts and full-list planning; platform-specific points are not transferred to Steam.
- Official October 8, 2026 update — first-party achievement-tracking fix baseline.