Let's buy a compass or a kit with a compass, that seems rather important.
I'm thinking that Alex has a mischievous personality with a tendency to get really really really hyper. I see him as the kind of person who would seduce somebody, let it get as far as the bed and point out his "poker" before absconding with the poor sexuality confused guy's clothing and possessions, cackling maniacally, and maybe showing up again later to mess with the guy again.
I also see him as a reasonable villain: "Sure necromancy is evil, but with this bone typing press, all your peasants could own a book!" And "I only want the corpses you aren't using, I would be quite happy to provide cheap labor for you if you let me." Or "I'm not going to kill you Mr. Artificer! That would be mean! I just want you to help me work on this idea I have, it's called a 'Computer'.
Basically minimal killing (only those that attack first, and then only if no way to restrain them) and a generally productive member of society. Science? Yes please. He may not be sure where these concepts come from, but he tries to build them anyways.
If a cleric tries killing us, if we can subdue them, do so, make sure they have enough food and water to get back to town, maybe give them an apology letter for injuring then (with lots of hearts and the closest thing to glitter we can find), and try to make anyone trying to kill us due to magical racism question if it is morally right to do that.
And above all, BE ADORABLE.
Edit: friend wise, make up personalities as we go, you have to have some idea of how you want them to turn out.