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