- Estimated achievement difficulty: 5/10
- Offline: 38 (1000

- Online: 0
- Approximate amount of time to 1000

- Minimum number of playthroughs needed: 1
- Number of missable achievements: None!
- Glitched achievements: None!
- Do cheat codes disable achievements?: No!
- Does difficulty affect achievements?: No, there are no difficulty options in the game.
The achievements are by no means hard in Bully, however as with most Rockstar titles, 100% completion will require some time.
Introduction:
To gain the full 1000

(Note: Enter on a second controller anywhere in the game, except cutscenes.)
Full Health:




All Weapons:





All Hobo Moves:









All Gym Grapple Moves:









Infinte Ammunition:





Massive Money Gain:





Step 1:
Play through the main story of the game, unlocking FRESHMAN, SOPHOMORE, JUNIOR, SENIOR and GRADUATE which are all awarded for beating story chapters. Whilst playing through the story try to attend as many classes as possible (All class answers here) as this will make things easier later in when trying to beat all classes to level 5 for 100% completion. It can also be advised to go for "short achievements" whilst in town, such as egging 25 cars. Also whilst playing through the game be sure to accept and complete any errands that you're offered, this will make things less tedious later on.
Step 2:
After beating the story you will now be in chapter 6, "Endless Summer", you are now free to roam around the game and do as you please. At this point, continue attending any classes you have yet to complete, especially Geography classes as these are vital for gathering collectibles. You will now also want to go and get the shorter achievements, such as picking 50 flowers or receiving 20 kisses from the gents (See achievement guide below).
Step 3:
Hopefully by this point you will have completed Geography 5 (If not refer to steps 1 and 2). You should now have the location of all collectibles; transistors, gnomes, G+G cards and rubber bands, marked on your map. As these are marked on your map they should cause little trouble in finding, if you are stuck with a particular collectible however refer to the "Guide to everything" on the forums found here.
Step 4:
With all classes beat and all collectibles obtained and the majority of errands beat, you should now be working towards obtaining all the secrets. These are things such as "Beat up the secret pirate", or "Buy 500 sodas" - See the PERFECTIONIST achievement on the guide below for a full list.
Step 5:
Finally, with almost everything done all you are left to do is to complete the Yearbook, this can be a tedious task but personally I found the best way at the start was to run around school taking photos of everybody, by doing this I had unlocked a good three quarters of the yearbook and then just used the following guides (here and here) to hunt down the last few pupils.
Conclusion
With all that done your game completion percentage should now be at 100%! As stated above, if your PERFECTIONIST achievement has not yet unlocked then simply save your game, exit to the dashboard, start the game up and reload your save, the achievement should then unlock.
If you're a few percent away from a 100 and have checked the checklists for 100% completion, here are a few common things people miss;
- Beat up the secret pirate
- Complete all 5 Boxing challenges
- Buy 330 items of clothing
- Win all carnival games once and ride all rides once