After I finish collecting the rifle and the other pieces of the vampire (arm, earring, etc.), I look around for openings to other parts of his lair. I'd like to find the part of the workshop where he stores his additional arms. While scrying, Finn described a wall with dozens of artificial limbs hanging from it. I want to collect and/or destroy all of them so he can't use them against us.
Since it seems we'll probably need to wait an hour for Finn to pray for another mass burrow, I take 20 on my search for hidden items/openings. If I have to, I'll take 20 three times while we wait for the spell. Once for items, another for openings/hidden passages/escape routes, etc., and a third for possible locations on coffins he may have around here. I realize he's a Tinker and I'm quite familiar with technology, so I don't just look for traditional coffins. I look for anything that may act as refuge for a vampire. Reinforced holes in the wall, constructs, vehicles, giant walking undead transforming houses, etc.
Also, let me know if at any time my Nemesis senses go off (60 ft. range).