Dodge seems like such a trivial thing to code in. Disadvantage on attacks. And it doesn't even have a placeholder icon in the UI. It's like they left it out on purpose. Tactically it would be a very nice last resort to have if a PC is getting overwhelmed.

Then again why would you dodge when all classes can just jump away to disengage as a bonus action... This has something to do with some Larian design philosophy that everything must be active. I bet they are allergic to a passive defensive mode.