Moving to Europe and seeking research assistant work after undergrad / masters - best approaches?
From my experience, EU citizen and familiar with Australian degree system, you will have a hard time getting into a PhD program. The honors bachelor cannot be considered at the same level of the Masters degree. Regarding employment in a lab in Europe your first hurdle would be getting a working permit. This might be hard unless you already have someone who can sponsor you. I think you are better off trying to find some field technician or volunteer position to collaborate with some of the labs and then perhaps start networking from there.
Otherwise you could try and move to Germany with the tourist visa for 3/6 months and start network that way. However German professors seem quite reachable by e-mail, I would start contacting some of them for which you have an interest in their research and see what they suggest.