Quote from TheLordOfTerror
Perhaps you're right. It's possible that his physical form was destroyed and his either too weak to risk telling anyone who he really is, or he simply doesn't remember anything except the stuff we need to do for him.Quote from ScP_Iodine
@snowbrew That's a ton of angel blood if that's the case. Although, the crash could have temporarily destroyed the form of Tyrael that we know and what we meet is a weakened form of him. I don't think he would be at full strength after a fall like that, so he will need our help to regain his strength.
Looking at the screen shot of Imperius bleeding out and seeing the change in his armor color from bright oranges and yellows and reds to that dull muted gray, i think that the armor is directly related to their life force. So, I'm not sure if they can be killed or not, but if that ghostly looking stranger is Tyrael I'm sure he will have to go through some process of getting his armor back, kind of like the archangel equivalent of corrupting a host.
@lordofterror, i don't think that will happen this time around. We have to stop Diablo from doing that and save sanctuary after all. Keep in mind Tathamet is an equal match to Anu who for all we know was the most powerful entity ever to exist. If Diablo succeeded in reforming Tathamet we would be screwed no doubt.