Adria or link can't be attacked when they are proved to be liars and a few more bugs.

When I loaded my save, both the usual -loadf or with code, or even just saving and loading with W3, this happens, and for some reason, how do I attack the tentacle?

Yeah saving and loading with W3 on the newest patch causes a number of things to break, including the Link/Adria attack trigger. Either avoid using warcraft 3 saving and loading, or play on an earlier patch. Or wait for the next version which will hopefully have most of these things fixed.