Do the following to earn your gamerscore points.
Defend Rivendell (5 points): Successfully complete Good Rivendell with all bonus objectives (Level 1).
Clear The High Pass (5 points): Successfully complete Good High Pass with all bonus objectives (Level 2).
Cleanse The Ettenmoors (10 points): Successfully complete Good Ettenmoors with all bonus objectives (Level 3).
Reclaim The Blue Mountains (10 points): Successfully complete Good Blue Mountains with all bonus objectives (Level 4).
Secure The Grey Havens (10 points): Successfully complete Good Grey Havens with all bonus objectives (Level 5).
Rescue Celduin (15 points): Successfully complete Good Celduin with all bonus objectives (Level 6).
Defend Erebor (10 points): Successfully complete Good Erebor with all bonus objectives (Level 7).
Assault Dol Guldur (30 points): Successfully complete Good Dol Guldur with all bonus objectives (Level 8 ).
Destroy Lothlorien (5 points): Successfully complete Evil Lorien with all bonus objectives (Level 1).
Demolish The Grey Havens (5 points): Successfully complete Evil Grey Havens with all bonus objectives (Level 2).
Scour The Shire (10 points): Successfully complete Evil Shire with all bonus objectives (Level 3).
Ravage Fornost (10 points): Successfully complete Evil Fornost with all bonus objectives (Level 4).
Commandeer The Old Forest Road (10 points): Successfully complete Evil Mirkwood with all bonus objectives (Level 5).
The Dragons Of Withered Heath (15 points): Successfully complete Evil Withered Heath with all bonus objectives (Level 6).
Pillage Erebor (20 points): Successfully complete Evil Erebor with all bonus objectives (Level 7).
Crush Rivendell (30 points): Successfully complete Evil Rivendell with all bonus objectives (Level 8 ).
Istari Power (5 points): Purchase first player power.
Captains Of The West (25 points): Successfully complete the Good Campaign.
Cover The Lands In Darkness (25 points): Successfully complete the Evil Campaign.
Servant Of The Secret Fire (80 points): Successfully complete the Good Campaign without a Hero dying.
Servant Of The Shadow (80 points): Successfully complete the Evil Campaign without a Hero dying.
Sergeant (15 points): Win one Versus game.
King Of The Hill! (15 points): Win one King of the Hill game.
Capture And Hold (15 points): Win one Capture and Hold game.
Middle-Earth Financier (15 points): Win one Resource Race game.
My Heroes!!!! (15 points): Win one Hero Vs Hero game.
General: Win 10 Versus games.
King Of Kings (30 points): Win 10 King of the Hill games.
Capture Them All!!! (30 points): Win 10 Capture and Hold games.
Entrepreneur Of Middle-Earth (30 points): Win 10 Resource Race games.
My Heroes Are Better Than Yours (30 points): Win 10 Hero Vs Hero games.
Good Practice (5 points): Win 1 Single Player Skirmish game.
The Hobbit And The Troll (50 points): Win a game against someone 20 places higher than you.
In Need Of A Lesson (0 points): Lose 10 Multiplayer matches in a row.
Try A Tutorial (0 points): Lose to someone ranked 20 places below you.