White to move, mate in 2.

That's a pretty good twomover! Not easy at all to deal with the 2 escape squares of the black king and I can see why you need all the white pieces in the box for that.
From the viewpoint of problem composition there is one weakness and it is the key move. Consensus is that one should not capture any other unit than a pawn on the first move hard as it may be in conjunction with your demanding theme. I looked into the position and found a different key move which leaves the composition intact after the first move: (a) move the white queen to e8 (b) remove the black knight. In addition you might consider adding a white pawn on h3 to the diagram which adds the try 1. hxg4? to the problem content.
Well done so far!
I can do it in three so far.
In puzzle chess there are no points for getting close to the target as there are often tons of solutions coming close. You really need to find the checkmate in 2 moves. Since the actual solution violates one of the laws of puzzle making I made a version which is neater:
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