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