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Alien Hallway 2 achievements, rarest first.
Every achievement in Alien Hallway 2, ranked by how many Steam players have unlocked it. Global completion rates from Steam, refreshed daily.
The rarest achievement
Collect 3500000 coins.
15%
of players
- Achievements
- 22
- Rarest
- 15%
- Ultra rare (under 5%)
- 0
- Average completion
- 41%
1
Collect 3500000 coins.
Collect 3500000 coins.
15%
2
Upgrade all soldiers to maximum.
Upgrade all soldiers to maximum.
16%
3
Kill 500000 aliens.
Kill 500000 aliens.
16%
4
Kill boss Kraken on hard level.
Kill boss Kraken on hard level.
17%
5
Complite 50 additional missions.
Complite 50 additional missions.
22%
6
Collect 500000 crystals.
Collect 500000 crystals.
23%
7
Earn 50 stars.
Earn 50 stars.
25%
8
Collect 100000 coins.
Collect 100000 coins.
29%
9
Destroy 1000 big boxes.
Destroy 1000 big boxes.
30%
10
Kill 20 bosses on hard level.
Kill 20 bosses on hard level.
33%
11
Upgrade soldier to maximum.
Upgrade soldier to maximum.
36%
12
Kill 20 bosses on easy level.
Kill 20 bosses on easy level.
42%
13
Earn 25 stars.
Earn 25 stars.
44%
14
Upgrade any soldiers 10 times
Upgrade any soldiers 10 times
45%
15
Kill 50000 aliens.
Kill 50000 aliens.
49%
16
Destroy 500 small boxes
Destroy 500 small boxes
50%
17
Collect 50000 crystals.
Collect 50000 crystals.
57%
18
Complite 10 additional missions.
Complite 10 additional missions.
58%
19
Kill 1000 aliens by barrel explode.
Kill 1000 aliens by barrel explode.
60%
20
Collect 30000 coins.
Collect 30000 coins.
61%
21
Collect 5000 crystals.
Collect 5000 crystals.
81%
22
Kill 1000 aliens.
Kill 1000 aliens.
86%
Percentages are Steam's global unlock rates across all players who own Alien Hallway 2, refreshed daily. Under 5% is marked in the lit blue.