RTF is a global modification that replaces all towns in the game.

I fought them as neutral creatures. Isn't that a bit of an advantage? They move far, hit hard, and take a long time to die.

Well, we didn't just take creatures from the neutral factions! Later, everything will be balanced. ;)

Added 2 minutes later

So, will the class ability be different too? By the way, what's that new class spell and spells for the Lizardmen? Are they going to replace the Orcs for sure?

All racial abilities remain the same, only the names and icons change. The exception is the Lizardmen! Now, to gain rage points in battle, you need to defend or wait, not attack.