The intro is methodical in its build up and dramatic when it hits you at 1:08. On the other hand, I really think that you should have continued the beat you teased with 1:13 and 1:27 for a few bars (not too many as that would drag on a bit) and used the piece from 1:15 to 1:22 to transition into the main bass riff at 1:36. Yeah, I know you like your crazy tones and weird time signatures, but I think you executed it better in the original Necrosis and Black Widow and here it doesn't sound as good.
I really like that bass riff by the way. Was it, by chance, a heavily mixed sample of the vocal track from the original Necrosis? Or at least part of the riff that plays at around 0:29 in the original? It vaguely sounds as if it could have originated from them. In any case, you could make something really rad if you mixed it up a bit more and filled in some of the empty audio space around it with more than just kicks and hats.