- Estimated achievement difficulty: 2.5/10
- Estimated time for 200 : 3.5 hours
- Offline: 10 (170 )
- Online: 2 (30 )
- Minimum playthroughs: 200
- Missable achievements: None
- Glitched achievements: None
- Do cheats disable achievements?: No (referring to Helpers as cheats)
The first thing you will want to do when you start Buku Sudoku is to go to the Help & Options menu and select Tutorials. Complete all eight tutorials, which take about ten minutes to do, to unlock Beat the Basics.
I recommend doing the online achievements first. To do this, you will need to set up three different lobbies. Start with a Team Battles game, then a Duel, then finally co-op. In the first two lobbies, alternate wins with your partner so that each player wins once. After that, complete one co-op game to unlock Friend and Foe. Now, complete twenty-two more co-op games to unlock, in order: Natural, Wired, and Socialite.
Now go to Help & Options > Settings > Helpers and turn AutoPencil on and set Show Errors to Deluxe. Now, you can go back to single player to finish the other achievements. First, pick Timed mode in Single-player and set the game settings to 6x6 and Easy. Once in game, look for squares that have one number highlighted. Fill in those squares with the number shown and do this within the time limit. Lather, rinse, and repeat nine more times to unlock Time Bandit. Now, go back to the single-player menu and select Casual. Now you have to complete one game of 8x8, 9x9, and 12x12 grids, as well as a Medium and Hard game. This will unlock Super Sizes and Sampler.
All that is left it to get Buku Bank, Master, and Grand Master. As mentioned in the guide, the fastest way to earn points is to play games of 9x9 Easy grids for points, and 6x6 Easy for games. Complete a 9x9 grid in under 1:20 to unlock Too Fast. This will be easy as you have the helpers. At 2.5 and 10 million points, you unlock Buku Bank and Grand Master, and at 200 games you will unlock Master.