Ask Matthias to explain the rules in further detail. Just in case it's some kind of "I find you, and then I try to kill you" sort of affair. You never know.
"There were no rules. I would try to kill people and they would try to postpone their fate by hiding."
"Come on, no. Here are the rules. You cover your eyes and count down from 60 while John and I hide. When you get to 0 you say, 'Ready or not, here I come.' and start looking for us. The last person you find has to look next. No killing what so ever."
"I understand." he says as he covers his eyes . "60, 59, 58..."
Create a bunch of kobold shaped blood decoys and get the fuck out of there. Hide in the first convenient spot you find after 40 seconds. Watch to see what Matthias does to the decoys. Confirm that he isn't just going to strike you down when he finds you.
Check it out first. Then come back and talk to Matthias if it proves to be an es-capay route or some such. What if it's like, a divine macguffin of bloodromancy power? We should definitely have that ourselves.
Also if it IS an escape I think we should officially resolve to take Matthias with us and trust in the power of friendship. I am fully aware of the potential ramifications and say we..... *snrrk*... ROLL with it.
You get closer and let your eyes adjust.
In the middle of the chamber floats a massive three-sided pyramid made of dark smooth stone.