Here is the full list of all 13 Ski Sniper achievements.
Earn 1 000 000 $
Collect all weapons
Earn 500 000 $
Earn 100 000 $
Hit Brain
Jumper body reaches 160m distance
Jumper body reaches 180m distance
Hit Heart
Hit Liver
Shoot down 10 chairs from chair lift
Jumper body reaches 140m distance
First jumper hit
100% objectives complete