It's either pointing the spearhead at the Alpha Kingdom, or swinging the broadsword towards the Orc Empire. In such uncertain circumstances, Hudson could only act according to the "Continental Rules"!
No matter what these subterranean races want, first hit them hard, make them feel the pain, and then talk about other issues.
Generally speaking, reasoning with fists can solve over 90% of issues, the remaining 10% is when your fists aren't hard enough.
Now both sides are in the dark, and without knowing the opponent's strength, it's hard to decide to fight to the death.
The rest is just probing!
All Hudson had to do was instill the concept of the Alpha Kingdom's immense power deep into the hearts of the subterranean races.