I have found that Hellfire is keeping a character as a secret. You can also play with network or LAN now even you can play a new quest. Just create a file named command.txt . Then you add in this:
multitest cowquest theoquest bardtest
You can get a new character,The Bard.
As an addition to the cheats for Diablo-Hellfire, I have found that in Hellfire v1.01 you can get an extra character, besides the bard, the barbarian.
The procedure is simple. Make a txt file called command.txt, and insert this line:
multitest bardtest cowquest theoquest barbariantest
There has been some problems with multiplayer working in Hellfire v1.01, so I have found these codes to help it out:
Open a DOS-Prompt and do this, from the Hellfire directory: