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