Here is the full list of all 29 Alien Shooter 2 - there are The Legend achievements.
Get 3 stars in all sector-2 missions.
Money earned: 2,500,000.
Complete all story missions in Sector №2.
Money earned: 500,000.
Complete all story missions in Sector №1.
Kill 10000 enemies.
Create Legendary weapon.
Disassemble 75 items of equipment into components.
300 assault rifle kills.
Disassemble 50 items of equipment into components.
Disassemble 25 items of equipment into components.
300 pistol kills.
300 shotgun kills.
300 energy weapon kills.
Get 3 stars in all sector-1 missions.
Get 3 stars in all sector-3 missions.
Get 3 stars in all sector-4 missions.
Get 3 stars in all missions.
Create 15 items of equipment.
Create 30 items of equipment.
Create 50 items of equipment.
Money earned: 5,000,000.
Kill 250,000 enemies.
Complete all story missions in Sector №3.
Complete the "Date with Kate" mission.
Complete all Micheal the Monster's missions.
Complete the game in ARCADE mode.
Complete the game in SHOOTER mode.
Complete the game in SURVIVE mode.