For a Pool video game, this is probably one of the better ones I've tried. The physics seem pretty good, although I did notice a little gravity pull into the pockets from time to time, usually with the cue ball.
Grinding through 200 games played takes some real patience. Some seem to think you have to WIN 200 games to get it, but I nabbed it with around 155 wins; just finishing out some games, even losing, will get it.
The Time Trial achievement is probably the hardest and takes a good amount of skill/practice. Just get under 13:00 across all 12 tables (they evidently didn't know what a 1 minute average across 12 tables added up to).
Golf and Trick Shots take a small amount of work, but aren't terribly hard.