Hard for Gamerscore Xbox Games

Games With Difficult or Time Consuming Achievements.

NBA Live 06: Moderately easy but not worth the pain of playing.

FIFA Road to the World Cup 2006: Moderately easy but not worth the pain.

Perfect Dark Zero: Heavily weighted towards multiplayer.

Ridge Racer 6: Fun game, but very hard to get.

Call of Duty 2: Fun game, but not good for easy points.

Quake 4: Weighted heavily towards multiplayer.

Dead or Alive 4: Fun game, but weighted heavily towards online multiplayer.

Far Cry Instincts Predator: Weighted heavily towards multiplayer.

Rumble Roses XX: Achievements take forever to unlock.

Battlefield 2: Modern Combat: Weighted heavily towards multiplayer.

Final Fantasy XI: Extremely hard to earn.

World Series of Poker 2007: Some are easy, but many take a long time to earn.

Need for Speed Carbon: Weighted heavily towards online.

Dead or Alive Xtreme 2: Very time consuming.

F.E.A.R.: Weighted heavily towards multiplayer.

Earth Defense Force 2017: Fun game, but achievements tied to beating the game on different difficulty levels, which is time consuming.

Command and Conquer 3: Time consuming.

Hour of Victory: Not worth the headache.

Monster Madness: Difficult game difficult achievements.

Blue Dragon: The game is great, but a long time to earn points.

Dynasty Warriors: Gundam: Fun game, but a long time to get them.

NHL 08: Too many online achievements. Difficult solo tasks.

Juiced 2: Online focus.

FIFA 08: For hardcore soccer fans only.

Virtua Fighter 5: Large time commitment and difficult.

Guitar Hero III: Game difficulty + challenging achievements make this one hard work.
Fast points - Playing the Xbox Live Arcade games. Earning all 200 is pretty easy in the hardwood card games, Uno, Galaga, and Pac-Man. You can get an easy 75-100 points in pretty much every game, but not Smash TV or Bejeweled 2 as they have some extremely hard achievements.