Assembly wasn't bad. There's the one center piece, two identical middle pieces and two identical outer pieces that all go into slots in the main base.
I used Army Painter's Alien Purple spray primer and then the old GW purple foundation paint with some of the old GW Purple wash with a few quick stabbing dry brushes over it.
There are a few limitations inherent in the Tectonic Craft Studio miniatures. The first, is that unless its a straight cut, the edges are not smooth. The second, is that there is no variation in the detail. Those pieces are all even pieces so if you're relying just on drybrushing a broad flat surface your results may not come out as you are used to. Think of it like painting a big flat plane vehicle and plan accordingly.
The base is just some of that basing material from Vallejo. When using it on larger projects like this its much less expensive than the Games Workshop stuff.