Here is the full list of all 21 Bass Pro Shops: The Hunt achievements worth 1,000 gamerscore.
Completed the Tournament in Bass Pro mode
Finished First in the Tournament
Finished the Tournament in the top 3
Complete the Tournament
Claimed all King of Bucks
Claimed all legendary animals
Found all Exploration Points
Unlocked Alaska
Unlocked Alberta
Unlocked Florida
Unlocked Minnesota
25 Instant Kills in Career Mode
Unlocked New Mexico
Unlocked Missouri
Unlocked Maine
Unlocked Wyoming
Unlocked Georgia
Completed the Washington Tutorial
Score over 1000 points in Forest Frenzy minigame
Score over 1200 points in Indoor Target Range
Beat BlindFire.