miketwoface: Can someone please describe the level up bonuses the classes are gaining from lvl 1 to lvl40?
In manual I've found only THACO, HP, spells gains.
But maybe classes are gaining special abilities? Like rangers can cast mage spells on lvl 9? What else? What about epic (20+) lvls?
Assuming you are referring to Collection 2:
THAC0 stops after level 17 for fighter-types (and only improves at odd levels).
Spellcasters gain the ability to penetrate magic resistance after level 11, I believe. I *think* level 31 may be when magic resistance can be ignored completely.
Clerics and Magic-Users, I believe, continue to gain spells per day through level 29. Paladins stop at 20, rangers at 17.
Spells continue to scale, so at level 40, Fireball will do 40d6 damage. (This is unlike games based on later editions of the rules.)
Thieves can use magic-user scrolls starting at level 10. Backstab maxes out at x5 at level 13.
Rangers continue to gain damage bonuses against giant-type enemies.
Paladin's Lay Hands ability continues to improve.
Saving throws continue to improve until around level 20 or so.