Portal 2
Preservation of Mass
Preservation of Mass
Break the rules in Test Chamber 07
PS3 Portal 2
Rarity
16.17%
Common
Difficulty
71.45%
Common
Bronze

First Achievers

User Date
1
Ragowit Ragowit
2
Angormatore Angormatore
3
BeginnerT_T BeginnerT_T (H)
4
Izkuru Izkuru
5
IKARUS-RG IKARUS-RG
6
CognacRhino800 CognacRhino800
7
RoaringMdog18 RoaringMdog18 (H)
8
DarkJediGaara DarkJediGaara
9
ExtremShooter_ ExtremShooter_ (H)
10
romary22 romary22
11
Qu1ck57r1k3 Qu1ck57r1k3
12
teflonminne teflonminne
13
tjn_1991 tjn_1991
14
Vo1cl Vo1cl
15
Jumba Jumba
16
smiley_raine smiley_raine
17
DesignatedDeej DesignatedDeej (H)
18
Halon_50 Halon_50
19
Toni45C Toni45C
20
Replin Replin (H)
21
Squibbs Squibbs (H)
22
Rorta Rorta
23
astrallight astrallight
24
SolarPenny SolarPenny
25
DekuTree180 DekuTree180
26
Molasar Molasar
27
TheRevolter TheRevolter (H)
28
sefjwm sefjwm
29
phoeni4495 phoeni4495
30
Stephen_C_IIT Stephen_C_IIT
31
broodwars broodwars
32
V-a-u-g-h-n-y V-a-u-g-h-n-y (H)
33
YieZiyun YieZiyun (H)
34
TragicTravesty TragicTravesty
35
I3rand0 I3rand0
36
animuson animuson
37
spiderbyte115 spiderbyte115
38
aaront1983 aaront1983
39
Grillbar Grillbar
40
OrbisNon OrbisNon
41
Gskyace Gskyace
42
PureNoob21 PureNoob21 (H)
43
ROFL-WAFFLES ROFL-WAFFLES
44
Wurkz- Wurkz-
45
sette_seven sette_seven
46
Blackwhale1 Blackwhale1
47
Aided_Onslaught Aided_Onslaught (H)
48
AugustUnder AugustUnder
49
jarsofash jarsofash
50
Mewa007 Mewa007

Latest Achievers

User Date
1
technoboy16 technoboy16
2
Thyx_ Thyx_
3
Ulfhednar7807 Ulfhednar7807
4
Executioner0 Executioner0 (H)
5
cshall42 cshall42
6
Smilerika Smilerika
7
tonyokiller68 tonyokiller68
8
ltd7ru ltd7ru
9
YosemiteSam74 YosemiteSam74
10
cryton-x cryton-x
11
kia_salemi kia_salemi (H)
12
ollidino ollidino
13
Enny_White Enny_White
14
CobaltCrescent CobaltCrescent
15
jacksplat95 jacksplat95
16
pherron pherron
17
Sparelll97 Sparelll97 (H)
18
Jupr1 Jupr1
19
ArtikSkarab ArtikSkarab
20
Fazeof1337planet Fazeof1337planet
21
Deibit Deibit
22
SicilianDragon92 SicilianDragon92
23
AlexOffLimits AlexOffLimits
24
T-JP100 T-JP100
25
Sawys13 Sawys13 (H)
26
djcawood djcawood
27
JumboWario JumboWario
28
Bizzy_Montana_ Bizzy_Montana_
29
Chill_OUT13 Chill_OUT13 (H)
30
Biowolves Biowolves
31
Penpen4 Penpen4 (H)
32
Gideon_Killer Gideon_Killer
33
SpazzMaticus28 SpazzMaticus28
34
Sehehebi Sehehebi (H)
35
muggybonehed666 muggybonehed666
36
ferpereyra012 ferpereyra012 (H)
37
Legendary_Raine Legendary_Raine (H)
38
SinnTrophyHunter SinnTrophyHunter
39
darklifeness darklifeness
40
spyBUDDHA spyBUDDHA (H)
41
Marketman316 Marketman316
42
C0gli0stroG C0gli0stroG
43
kenseizenkai kenseizenkai
44
CreateToBeGreat CreateToBeGreat
45
Jolakotturin Jolakotturin (H)
46
natarthegreatar natarthegreatar (H)
47
MainComptonese MainComptonese (H)
48
Shorty132471 Shorty132471 (H)
49
Chaos_Bladez Chaos_Bladez
50
So-CalSoldier760 So-CalSoldier760 (H)