To access some secret Easter eggs in Hellfire, create a text file called command.txt and place it in your Hellfire directory. Next, place the following line in command.txt:
multitest;cowquest;theoquest;bardtest
This enables LAN and modem games, two new quests (Cow Quest and Theo Quest), and two new character classes:
The Bard reuses the Rogue's art, but can wield two weapons at once and has the Identify spell as her natural ability.
Transfer
Characters from Diablo:
To transfer your characters from Diablo to Hellfire, find your save file
and change the extension to .HSV. For example, if your file is called RASSILON.SV
then rename it to RASSILON.HSV.