He has an elixir which allows him to be resurrected. He uses it in the Baroque Cycle as well as Cryptonomicon. If I remember correctly he also uses it to revive Bobby Shaftoe.
Right - in Sweden, when he dies, Hacklehaber stays in the room with him, and then walks out with some guy under a sheet, which is evidently Root.
Aah, always wondered about that.
Thanks for clearing it up.
There are a bunch of other things that are also a bit clearer if you read the Baroque cycle, which also add to a rereading of Cryptonomicon, like the Samurai swords in the trunk of the Shaftoes' car.