Nachtfalke is the solo-project by Occulta Mors (from the cultish formation Moonblood). It got formed in 1996 and released quite a few demos/albums and splits ever since. In comparison of Moonblood Nachtfalke is a little more epic and leans towards pagan/Viking metal (he uses the Viking beliefs as his main influential source). On his last album "Land of Frost" comparison can be made with older Immortal and Burzum and perhaps a twist of Bathory (Viking era). Besides the tourmember Shardik (see also Krater) there are three other live-members of the band, but who these are is not known to me on this point