Here is the full list of all 30 Hunting Simulator achievements.
Finished all missions in The Alps
Kill an entire flock of birds in Waterfowl Hunting
Kill 2 birds with 1 shot
Finished all missions in Coastal Rainforest
Get 25 Lungshots in Single Player or Free Hunt
Finished all missions in Chihuahuan Desert
Finished all missions in Mid-West Subalpine
Spot 100 animals in Single Player or Free Hunt
Kill 2 animals from the same herd
Take down an animal from over 150m in Single Player or Free Hunt
Finish your first mission
Finish a mission by completing all secondary objectives
Complete a hunt without analyzing a track
Finished all missions in Mid-West Alpine
Finished all missions in Southern Table Lands
Finished all missions in Arctic Tundra
Finished all missions in Rocky Mountains
Finished all missions in Mountain Lake
Finished all missions in European Forest
Finished all missions in The Highlands
Finished all missions in the Highlands Loch
Complete the Single Player Campaign
Complete the game on Easy difficulty
Complete the game on Normal difficulty
Complete the game on Hard difficulty
Get 50 Headshots in Single Player or Free Hunt
Get 25 Heart Shots in Single Player or Free Hunt
Complete a Hunt without being detected
Successfully called 25 animals in Single Player or Free Hunt
Completed all legendary animal missions