I went through all of 1-3 without checking around for him. I ran into him after I had already cleared the level, and couldn't figure out how to open that gate from the other side. I ran up top and dropped down with him and fought off the knights. He thanked me. I noticed he was stuck behind the gate still, so I went back to the other side to check it out. Saw the lever this time and opened the gate. He walked out, all he said when I talked to him was thanks (wasn't he supposed to give me an item?). I went on to Penetrator, Ostrava didn't fight with me. Haven't seen him since. I've gone through the level several times looking for his body. Nothing.
Now on 2-2, I have no idea what's going on. I go pure black, go down to the tunnel with the two geckos, and I can tell that's where he's supposed to be. I see bloodstains of people fighting (there's nothing else to fight there) and I see a little camp set up. No Scirvir though. If I go pure white and he shows up, can I kill him for the talisman or does he have to be a phantom (black)?