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