Summary
More of the same
The Good
What I liked the most was the level design (two or three levels are large) and the new art here and there, the fun the game has, the intrigue... But the most interesting feature of this add on is that it has special secrets. These secerts aren't just hidden places with pick ups (unlike the other TR games), some of them are large areas with new enemies, weapons, quests and unseen tombs or treasures. That makes a new incentive to care about secrets, although they are vey hard to find.
The Bad
Besides the new levels and art and the special hidden areas, this add on is more of the same. The weapons are the same, the enemies are the same (some of them with new clothes and palettes, but their weak AI hasn't changed), the difficulty is the same (sometimes the game is annoying and way too hard, just like TR 3), the reunion with the final boss is disappointing and adds nothing new. Also, the game has no new cutscenes to back up the story, which, by the way, borrows too much from TR3, is lamely forced and makes little sense (they resurrect a character from the original without any good justification).
Anyway, this expansion pack feels recycled, cheap and with little interesting to offer the player.
The Bottom Line
Play it if you liked the other Tomb Raider games, specially if you liked Tomb Raider III.