Lock the door. Write official contract to end hostilities and ask if they would agree on it. Negotiate.
You press a button, locking the door loudly. You start writing a contract on the back of a notepad and press it up against the window. The blue eyes seem to be reading it.
Be German towards those creatures to scare them off.
Aha, yes! Shouting in German always scares people, and that's exactly what you need in a high-stakes negotiation. Right, now what was that Claude said to that waitress in Stuttgart? That sounded sufficiently intimidating.
"Ntschuldigung! Ich spreche nicht sehr gut Deutsch! Wieviel kostet das!? Ist das Trinkgeld INBEGRIFFEN!? VIELEN DANK!"
The blue-eyed being seems to be introducing their palm to their face.
Threaten to switch the Kraftwerk CD with a David Hasslehoff CD if they don't leave us alone
You threaten in English to swap out the Kraftwerk for David Hasslehoff. They don't seem that bothered by it. If anything, they look a little interested.
Dammit! You knew David Hasslehoff was in league with the forces of darkness! It was an empty threat anyway. You don't have a David Hasslehoff CD because who the hell does?
Also grab the pipe if we are going down we are going down fighting!
The lug wrench would make an awkward weapon: it's more wheel-shaped then wrench-shaped.
If you mean the other meaning of pipe, well, you have this bong you got for Claude in Amsterdam. He's more into that sort of thing then you, but if you were being ripped apart by demonic hellbeasts maybe the pot would soften it a bit. Everything's better when you're stoned, as proven by last Saturday night in that conference.