This is really sick and 1:44 sounds really nice. The main sound in 2:02 is drowning other sounds out so I think you should tone it down a bit to still have it be the main sound but let some other sounds come through. I think the ending could've been a bit more defined. As far as dynamism goes this is pretty good but the songs best quality is it's composition.
Overall this is really sick and I think it's very well done besides some minor things.