Classes are rather open minus ones that use magic since there is no Magic system in Firewind.

With the patch there are two new classes to add to the basic Berserker, Knight, Rogue, Assassin, etc. Gunslinger is a skilled gunman using Pistols or rifle. There are only a couple of rifles available with the 5th anniversary patch and those are high level weapons so a character would start with pistols. 

The second class doesn't have a good name but I'm going with Martial Marksman, for now. The Martial Marksman wields a one handed long sword or other one handed weapon in their primary hand and a pistol in their off hand. Think Martial Artist meets Gunslinger. 

Only a new character can have either of these classes as an option since they don't exist before April 1st, 2032. Your experienced character will have to be one of the base classes.