( edit: the leg masters is being touched up and recast, should have new parts in a couple of weeks.)
A 1/8 drill bit will take care of the overpour in the locator holes here.
Glue both sides of the upper legs together, the pins going into the legs. You may want to sand and putty to hide the big seam here.
The missile pods and shoulder stalk. Be careful with the alignment. Id wait to the end of assembly to make sure you got everything pointing where you want.