BlazBlue: Central Fiction/Guides/Grim of Abyss Mode

Grim of Abyss Mode is a mode where you can fight waves of opponents and strengthen your characters stats with various methods

Magic Workshop
A place where you can strengthen your selected character with items, enhancements, and grimoires.

Grimoires
Grimoires can be equipped to each character. There are a total of five different Grimoire types:

Stats
Grimoires have a set amount of points that can be allocated towards different stats that strengthen your character. The higher ranked grimoires have larger point ceilings for stats. There are seven different stat types:

Skills
Skills can be attached to Grimoires. They can have a max level of 10, and be ranked A, B ,C, D, or E. Skills can be extracted from grimoires; extraction gives a chance to produce a unique slot Skill, level up skills, and produce items. However, extracting skills destroys the grimoire.

Level 1
''[Course: Defense] The entry-level course, where Calamity Trigger's Story Battle is the source of its inspiration. Here, you will find a lot of HP and defense Skills.''
 * Difficulty: Easy
 * Max Depth: 100

Level 2
''[Course: Offense] The course where military academy students appear as bosses. Here, you will find Skills that increase attack or offensive abilities.
 * Difficulty: Easy
 * Max Dep: 100

Level 3
''[Course: Special] The course where vigilante members appear as bosses. Items dropped will be very unique.
 * Difficulty: Easy
 * Max Depth: 100

Level 4
''[Course: Offense] The course where Sector Seven members appear as bosses. Items dropped will have a heavy emphasis on Heat.
 * Difficulty: Normal
 * Max Depth: 100

Level 5
''[Course: Defense] The course where characters from Chrono Phantasma appear as bosses. Items dropped will have a heavy emphasis on defense.
 * Difficulty: Normal
 * Max Depth: 100

Level 6
''[Course: Offense] The course where members of the Six Heroes appear as bosses. Items dropped will have a heavy emphasis on attack.
 * Difficulty: Normal
 * Max Depth: 100

Level 7
''[Course: Unique] The stages will take you through Continuum Shift's story. You will see rare items dropped here.
 * Difficulty: Hard
 * Max Depth: 100

Level 8
''[Course: Unique] The stages will take you through Chrono Phantasma's story. You will find rare Skills dropped here.
 * Difficulty: Hard
 * Depth: 100

Boss Rush Dungeon
''[Course: Unique] the Boss Rush Stage. Clearing all the stages and bosses is the ultimate goal of this mode. You are able to skip bosses you have defeated and resume where you left off. If you're having trouble, try to figure out the weakness of each bosses and exploit it!''
 * Max Depth: 32