bernhardhausdorf's Identifications

Collected 1st of September, 6 p.m., from the path seen in the pics i took the other day.
Saw multiple slugs when i took it. This one in particular startet to squirm right away, as i got close. Prior to 2018 this area would have been spruce plantation with the odd larch and pine.
The roads/paths north, west and east of this seem dominated by A. vulgaris.

Some slugs from that valley look more like A. rufus, externally at least.
https://www.inaturalist.org/observations/162178438
https://www.inaturalist.org/observations/157250240

I tried pairing it with different A. vulgaris multiple times. One time the latter showed interest, but that was after the video was taken and it wouldnt stop squirming so i seperated them. No eggs were layed.

Vid of the squirming behavior which was easy to reproduce in this individual.
The back was chocolate brown and foot fringe bright orange, contrast kind of visible in the video.
https://www.youtube.com/watch?v=_cEq9m7F1Bs