Here is the full list of all 21 Cabela's Dangerous Hunts 2009 achievements worth 1,000 gamerscore.
Completed the Career Mode on Difficult.
Completed the game 100% on Difficult.
Earned all Platinum Medals in Action Zone.
Completed the game 100% on Normal.
Earned all Gold Medals in Action Zone.
All Power-ups have been used at least once.
Earned all Silver Medals in Action Zone.
Earned all Bronze Medals in Action Zone.
Completed all Bonus Missions.
Completed all objectives in Russia while playing Career Mode.
Completed the Career Mode on Normal.
Completed all objectives in Namibia while playing Career Mode.
Completed all objectives in Thailand while playing Career Mode.
Completed all objectives in Congo while playing Career Mode.
Completed all objectives in British Columbia while playing Career Mode.
Completed all objectives in India while playing Career Mode.
Took down at least 15 Poisonous Snakes playing Career Mode.
Completed all objectives in Ecuador while playing Career Mode.
Completed all objectives in Alaska while playing Career Mode.
Completed all objectives in Tanzania while playing Career Mode.
10 Bee Hives have been destroyed playing Career.