So I'm heading for Vault 112 and on my way I see this church, I think to myself "oh nice church, maybe there are some friendlies there cause it's a church and shit". I enter the church and get a shotgun blast to me body from a trap, then all of a sudden I see 4 reds light up. Head outside and walk into a flamer, kill him. In the distance I get shot at from 3 other dudes. I duck behind a wrecked car, which gets on fire from the enemy fire. I go duck behind the church and I see one red icon coming towards me...as he comes to me the wrecked car explodes (holy shit, they're like mini-nuclear explosions, so loud, always scares me). Then I wonder where the other two raiders have went and come from my hiding spot and see they're in a fight with a trader who passed by.
Luckily there was a lot of loot in the church.
What's also fun is luring enemies into traders or brotherhood of steel guys or outcast brotherhood of steel guys. They're so fucking strong and do all the work for you, although once two super mutants (one with a mini-gun) killed one brotherhood guy who had a laser rifle, the other guy killed them off but it got me great armor and weapons.
When wandering through the wasteland it still amazes me how utterly destroyed this world is, the imagery is more scary than anything I've experienced in any game...so cool.