Its a very well painted mini. VERY well.
I do have some concerns regarding the claim of master level though, as there are a few elementary mistakes.

Just in the last picture:
1) The spike on the end of the haft of the hammer. On the underside, there is a clear image of a dark bump about 1mm from the tip of the spike. It appears to be a paint globule that dried and then was applied to the model.

2) Looking from behind, the left jet engine. Near the outside of the engine, about 1/4 of the distance from the left there is a line delineating parts of the engine. Just to the left of there this line makes contact with the bottom of the inside diameter of the engine housing is a spot of brown that bled into the black.

3)On the basing, there is a white mark on the circular piece of equipment the marine is standing on. No other white marks occur on the base, so it appears to be a fleck that dripped from a white wash.

Don't get me wrong. This is an extremely well painted model, far beyond my talents. But master level has no mistakes.