What do you think of my first chapter?

Despite what you may think, this is actually pretty good. There are some things you probably want to fix though. The first is that you should NEVER use a run-on sentence in dialogue. No real person would ever do that. Second, if this is taking place in a different time period or world, you probably want to change their manner of speaking to reflect that. Third is that you should probably cut to the chase a little quicker. Some suspense is good, but here you have drawn it out just a bit too long. Drawing it out too long eventually makes it tedious to read. Readers want to know what is happening, and to get to the action, not spend a lot of time on things they can't understand. Aside from that though, it's great. My advice (since I ume this is a first or second draft) is to put this away for a day of two, and then come back and read it over. Then lay it aside and rewrite the entire thing. That will give you time to think about what you want to improve and when you read it over, you will know exactly what to do differently. Don't give up on it though, it definitely has potential!