In the hype trailer, the devs claim that it should be able to work with a controller right away. But when I boot up the game, it doesn't recognize my Dualsense controller at all. Nothing. So this is actual false advertising and really scummy behavior on their part.

I would appreciate any tips to get the controller working.

How do I do that?

Go to the folder where the game is installed, find Dino2.exe, right click, go properties, compatibility, and check "Run this program as an administrator"

Appreciate it! It still didn't work, though.

Have you tried JoyToKey to map the controls? This has worked for me with the Resident Evil titles as well as this.