First of all, only two episodes left in this season.
I loved this episode and the way of how it picked up things from the pilot episode. If Constantine wouldn't had slipped a thing about Zed I would had believed that this one was the second episode and everything was just shuffled by the editors to get a proper traction for the season - just like they'd hinted in the interviews.
The only cheesy thing was the CGI paradise at the very end. It didn't look real, at all. Instead it was just cheap effect, but that didn't carry into other effects. Those deaths were real enough for me to get a creepy feeling. In fact, my skin was crawling when Shaw lashed throat. I just didn't want to see it because it brought back memories from Freddy Kruger. You could even claim that this episode had parallels to his infamous dream world, but at least these people didn't had to be scared that sort of thing.
What I couldn't understood was where did they found the spell? Did Constantine had it in his library? Also did Manny show something to Ritchie in the paradise for him to turn around his sledge and start living in the real world?