The only grave I ever saw in CV2 was Dracula's grave. There are three endings total. If you use a passward to finish the game you get a grey-scaled ending. If you took too much time you get the bad ending with the blue sky, green grass and blue water and Simon kneeling in front of Dracula's grave. If you get the good ending you get the orange/red sky with the orange/red water and orange grass. Simon is still kneeling in front of Dracula's grave. Then after the story wraps up, the scene changes to night and as Dracula's grave shakes, his hand pops out from the mound of dirt. I think Simon only died in two of the three endings. The final ending I mentioned is probably the one where he survives the curse but then has to deal with Dracula once again. Sadly this was never followed up on, however SCV4's intro was an eery reminder of that ending sequence and would've made a hell of a sequel to CV2 if it had gone that route.