Partial Answer

Here is the solution for the Sudoku, H is 'H'ighlighted with yellow color.

As pointed by Deusovi, this is:

Herugolf puzzle

And here is the solution.

Now it leaves how to extract the final answer.

Here is the solution for the Sudoku, H is 'H'ighlighted with yellow color.

As pointed by Deusovi, this is:

Herugolf puzzle

And here is the solution.

Thanks to Johnson, to extract the final answer:

For each row, mark all cells with no line passing them. You will see that sometimes it is just a single marked cell or two adjacent marked cells. We can then treat them as Morse code!

-- -.-- -. .- -- . .. ... ... ..- -.. --- --. --- .-.. ..-.

Resulting "my name is sudogolf".

Partial Answer

Here is the solution for the Sudoku, H is 'H'ighlighted with yellow color.

Partial Answer

Here is the solution for the Sudoku, H is 'H'ighlighted with yellow color.

As pointed by Deusovi, this is:

Herugolf puzzle

And here is the solution.

Now it leaves how to extract the final answer.