Ok Here is what I done:
1. Take the 'Black ring' and another yellow item I crafted to a mule char.
2. Enter the same Items's ID code (the one after 04 07 08 15 XX XX XX XX) to the Black ring's code. Save and load game. Now you have 2 yellow item one has tons of attribute with the name Black SOMETHING other is your normal Yellow Item, so basically, this process converts your normal 5 attribute normal item to 20 attribute. You can now enter +EXP how much as you want.
3. Do this process to all the slots (Amulet, rings, bracers, shoulders etc.) except the Cain Set's (I use gloves, pants and boots).
4. Now you'll have around +500 exp each with total of 8 items (gloves, boots, pants and helm is excluded).
5. Find the Hellfire ring's code with this method I explained a previous post, and put those codes to the Rings you have. So one of your rings will have +35% and tons of stat at the same time. You only need to change the ring's item code to Hellfire's code. Now that item will convert to a Hellfire ring but with tons of stats in it and a yellow colour.
6. Find the Leorics Signet code the same way and put that code to your other ring. So your rings will gain 35% exp bonus. Names of them will probably not be seen but that doesnt matter. A leoriC Signet with tons of +exp bonus and %35 exp is sweet.
7. Create a helm but dont use in it the '3 Socket code' instead use 3 x '1 socket code'. So you will have 99% gem bonus here.
8. Craft a Pant, Glove and Boots and make them Black Pant, Black Glove, Black Boot.
8. Craft Cain Set.
9. Take Cain Set ID's and copy-paste the ID to those ID with Black Pant, Black Glove, Black Boot.
10. NOw, you have a Cain set with 20 attribute each, put +exp bonus for them.
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With this method, you will have
- 99% (helm), 70% (ring) and 35% (cainset) exp bonuses = 200% exp
- 13 items with 500 exp each = 6500 exp.
- Master V level gameplaying = 150%
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But, In somepoint of game you stop leveling because your char becomes too op for the monsters. You cant be 20+ before you kill Skeleton kill for example. I tried everything but you dont gain any ex I think at this level with those monsters.
If you play normally,
you cant pass 32+ in 'normal' mode.
And you cant pass 55+ in 'nightmare' mode.
Those are the limits I observed.
So I advice you to create an Act IV game with your higher level char (those monsters are higher levels so they always give you much more exp than other acts) and start the first quest then exit your high level char. Enter with level 1 char again to start with that quest and join with 3 more level 1 char (u need 3 joysticks) so, When you there's a high level difference between the characters in game, lower characters doesnt get much exp. So always try to play with same level chars and level them all, alltogether.
If you dont have additional joysticks, you can dupe your rings and amulets for your follower, because quarter of their +exp bonus stat adds to you.
Level until 30 in act 4 normal (15 min.).
Level until 50 in act 4 nightmare (45~60 min.).
Level until 60 in act 4 hell (25-35 min).
In a half an hour you can level 4 of your characters to 60, in 3 hours 8 of them. Basically the fastest way I achieved.