It is pretty well done. Though could be a bit longer perhaps. The two sounds to me do not fully compliment each other as one is a more serious tone and the other a little more playful. Though all in all it is a good piece just has some room for improvement.
It's not very long because it's only used in the pre-talk before a boss fight so it'd be pointless to make it any longer, also there's way more then 2 sounds in this so you need to be more specific.
Please contact me if you would like to use this in a project. We can discuss the details.