Can Assassins Use Greatswords?

[UngeheuerLich]

You donßt need any proficiency... just use ki focus with that improvised attack...

 

[Insight]

You donßt need any proficiency... just use ki focus with that improvised attack...

Not that it matters, but I think Assassins can only make implement attacks using weapons (unarmed attack or something else) with which they are proficient. For melee or ranged weapon attacks, it wouldn't matter.