From publisher blurb:
The Prismatic Cyclopedia Classes is a compendium intended to be used with any OSR game that keeps close to the original rules. But this is not just a re-imagining of the character classes, this is also a handy guide for players and GMs alike:
Classic Hooks
Tropes and Tools
Alignment
A discussion of the alignments
Tips on role-playing alignemts
Languages
A discussion of alignments as "languages"
The Classes
Cleric, Fighter, Magic-User, Thief, Dwarf, Elf, Halfling
A discussion on clerics and alignment
Advanced Options
The Death Save
Dual-Classing
If you play in an OSR game, from OSE to Lamentations, you owe it to yourself to check out this compendium.