Alien Hallway
achievement guide & roadmap
Specialist
Upgrade one unit till 10th level
20.4%
No guide has been input for this achievement yet
Professional
Complete the game on extreme level of difficulty
15.5%
No guide has been input for this achievement yet
Phantom warrior
Have 10 Snipers simultaneously present during the battle
40.1%
No guide has been input for this achievement yet
Perfectionist
Get 5 stars for all game levels
21.1%
No guide has been input for this achievement yet
Numerical Superiority
Call for 20 friendly units during the battle
72.7%
No guide has been input for this achievement yet
Mean
Accumulate 1000 energy units during the battle (can't be achieved on "Resources refill" and "Final Step" levels)
50.3%
No guide has been input for this achievement yet
Master of defense
Upgrade the base till 5th level
24.8%
No guide has been input for this achievement yet
Liberator
Complete all game levels
35.6%
No guide has been input for this achievement yet
Invincible
Complete any level of the last planet without loss of friendly units
27%
No guide has been input for this achievement yet
Hell
Call for 20 Flamethrowers during the battle
54.1%
No guide has been input for this achievement yet
Great commander
Upgrade all friendly units till 4th level
23.5%
No guide has been input for this achievement yet
Good start
Liberate the first planet
64.6%
No guide has been input for this achievement yet
Fire in the hole
Throw 300 grenades
60.1%
No guide has been input for this achievement yet
Extreme
Win the battle with lower than 50% health level of your base
21.7%
No guide has been input for this achievement yet
Elite only!
Call for 5 Heavy laser gunners during the battle
43.6%
No guide has been input for this achievement yet
Blood Lust
Kill 100 aliens
82.6%
No guide has been input for this achievement yet
Bloodbath
Kill 1000 aliens
67.9%
No guide has been input for this achievement yet
Armada
Call for 50 friendly units
71.3%
No guide has been input for this achievement yet
Air supply
Use airstrike 100 times
38.3%
No guide has been input for this achievement yet
Air force
Upgrade airstrike till 7th level
27.3%
No guide has been input for this achievement yet