The Brookhaven Experiment/Achievements
The Brookhaven Experiment achievements by rarity
Global completion percentages from Steam, rarest first
Achievements
20
Rarest
0.4%
Ultra rare (<5%)
9
Avg. completion
16%
1
Ammo Conservation
Survive a nighttime campaign level using only the knife.
0.4%
2
Overkill
Acquire all guns and upgrades in a survival game.
1.4%
3
Fireworks Factory
Acquire 200 throwables in campaign mode.
2.2%
4
Smile, You Son of a...
Blow the head off of something large and toothy.
2.8%
5
Radio Tower
Survive the final campaign level.
2.9%
6
Peoria Caverns
Survive the ninth campaign level.
3.1%
7
To The Teeth
Acquire all guns and upgrades in campaign mode.
3.6%
8
Sangamon Forest
Survive the eight campaign level.
4.1%
9
Bridge
Survive the seventh campaign level.
4.7%
10
Reservoir
Survive the sixth campaign level.
5.4%
11
I Like The Night Life, Baby
Finish a nighttime campaign level without turning on the flashlight.
5.8%
12
Storm Drain
Survive the fifth campaign level.
7.9%
13
Tubthumping
Survive ten waves in a survival map.
9.3%
14
Observatory
Survive the fourth campaign level.
15%
15
Laboratory Basement
Survive the third campaign level.
22%
16
Quad Damage
Kill four enemies at once with an explosive.
30%
17
G-Note
Kill 1000 enemies.
40%
18
Town Square
Survive the second campaign level.
42%
19
Abandoned Factory
Survive the first campaign level.
60%
20
C-Note
Kill 100 enemies.
68%
Percentages are Steam's global unlock rates across all players who own The Brookhaven Experiment, refreshed daily. See live player counts and stats for The Brookhaven Experiment.