I'm working on a review for Torchlight on XBLA, and it caused me to find out that XBLA games are limited to 200 points. It's a bummer, because there are some decent Steam achievements on the PC version, but they had to drop them. On XBLA, finishing the main story will get you all of the achievements. :(
On the upside, that will make a grand total of 1 game where I've gotten all of the available points. I'll try for an achievement/trophy if I think it looks fun, but if it gets boring or incredibly annoying, I'll usually move on. Too many games, not enough time. :)
I hate the 200 point cap for xbla titles. I totally would've had most of the ones for Defense Grid (I fucking love that game lol) in fact I only need one more achievement but it's damn hard.
The kind of ach's I like are probably more associated w/ difficulty.