I'd laugh, but maybe take some notes. If I was to make a similar game or even a sequel, I would want every bit of criticism. He would be a gold mine for me. I'd probably send him a note thanking him for reviewing it and maybe even ask if he had any further criticisms. Maybe even ask him if he had any suggestions for the future game. Even if he said "don't make a sequel", I would take that into consideration. He may be a comedian and maybe not the most serious reviewer, but every review is important.