ah brilliant - I loved that game.
I don't want to spoil it because I don't know how far you've got in the game but bear in mind there are some very different enemies later on, less occult and more super-science. Zombies and occult madness still underpin the game and occur throughout however, and there are several different types of zombie/undead...things.
Flamethrower for the win!
If you liked RTCW then you might want to check out the first Bloodrayne game too for similar themed stuff. I found them equally enjoyable for 'suspension of disbelief' WW2 zany pulp madness. There is a Bloodrayne 2 I believe but I heard it wasn't very good and its a modern setting instead of WW2.