How many achievements does Alien Hallway have?

Alien Hallway has 20 Steam achievements.

What is the rarest achievement in Alien Hallway?

The rarest Alien Hallway achievement is “Professional”, unlocked by 18% of players on Steam.

Alien Hallway/Achievements

Alien Hallway achievements by rarity

Global completion percentages from Steam, rarest first

Achievements

Rarest

18%

Ultra rare (<5%)

Avg. completion

44%

Professional

Complete the game on extreme level of difficulty

18%

Specialist

Upgrade one unit till 10th level

23%

Perfectionist

Get 5 stars for all game levels

23%

Extreme

Win the battle with lower than 50% health level of your base

24%

Great commander

Upgrade all friendly units till 4th level

25%

Master of defense

Upgrade the base till 5th level

27%

Invincible

Complete any level of the last planet without loss of friendly units

29%

Air force

Upgrade airstrike till 7th level

29%

Liberator

Complete all game levels

37%

Air supply

Use airstrike 100 times

39%

Phantom warrior

Have 10 Snipers simultaneously present during the battle

41%

Elite only!

Call for 5 Heavy laser gunners during the battle

44%

Mean

Accumulate 1000 energy units during the battle (can't be achieved on "Resources refill" and "Final Step" levels)

51%

Hell

Call for 20 Flamethrowers during the battle

54%

Fire in the hole

Throw 300 grenades

59%

Good start

Liberate the first planet

64%

Bloodbath

Kill 1000 aliens

67%

Armada

Call for 50 friendly units

70%

Numerical Superiority

Call for 20 friendly units during the battle

72%

Blood Lust

Kill 100 aliens

81%

Percentages are Steam's global unlock rates across all players who own Alien Hallway, refreshed daily. See live player counts and stats for Alien Hallway.