-Estimated achievement difficulty: 3/10
-Offline: 41 (1000)
-Approximate amount of time to 1000: 15-20 Hours
-Minimum number of playthroughs needed: 1
-Number of missable achievements: 2 (sort of). You can explore the world more before the final boss fight, so technically no. Trap Master proves a problem if you don't get it before the last save point. Also, if you do not get the chests at the start of the game you will not be able to get them later, but they are very easy to get.
-Do cheat codes disable achievements? No cheats
-Does difficulty affect achievements? No difficulty choice
-Glitchy achievements: None
-Unobtainable achievements: None
-Extra equipment needed? None
This game does not have a difficulty setting of any kind and has 3 save file slots. You only need to use one of them. The game has you manually save, so do this often and before you quit. During your journey you will have an extreme amount of collectibles to get, so you should use a guide to make sure you get them all as fast as possible. There is an in-game map which is extremely helpful and you will be using it often. The game's world is separated into many areas. There are no levels or chapter select. You will be doing puzzles, battles, and collecting for the entire game. Worry about the Trap Master achievement. Check the achievement description before playing the game to get an idea of what is expected. A lot of your achievements will come through normal play of the game.
Step 1: Play through the story
Play through the game, obtaining all collectibles and working on achievements at appropriate times. Use the "change outfit" at save points to respawn enemies in your favor. Make sure you get the Trap Master as early as possible (check the achievement description for more info).
Step 2: Make sure everything is done before fighting the final boss
At the end of the game, right before the boss is a save point. Make sure you hover over every area on the map and have all collectibles. Grab any other achievements you have missed. The last achievement you get before you beat the game will most likely be Brave One, so check the description for grinding the levels associated with it.
This is a pretty easy game to get all the points in. You should have no trouble getting them for the most part unless you become careless and rush through it. It's very tedious to backtrack in this game, so make sure you get all collectibles if you can in each area before leaving.
x360a would like to thank Tyger7 for this Road Map