The Fireshadow is added by TFix (as many other things, such as the "little big world" section in The Sword) also to the original (Dark Project) version of the game. It is of course an improvement but in a way it is a sad aspect that the original version of the game "as it was" with all its little differences (both gameplay- and engine-wise, sometimes intertwined ) is not playable on modern setups in any way anymore. For example, how many players today know that you could get enemies drown ...