Underground Station is unlocked after completing the job Accept The Offer Made By The Russians in To Russia With Love.
You can collect your energy boost every 8 hours.
| Level | Materials | Payout |
|---|---|---|
|
Complete Accept The Offer Made By The Russians | 100 
|
|
 x0,  x0,  x0,  x1,  x0
|
200
|
|
x1, x1, x1, x3, x1
|
300
|
|
x2, x2, x2, x5, x2
|
400
|
|
x3, x3, x3, x7, x3
|
500
|
|
x4, x4, x4, x9, x4
|
600
|
|
x5, x5, x5, x11, x5
|
700
|
|
x6, x6, x6, x13, x6
|
800
|
|
x7, x7, x7, x15, x7
|
900
|
|
x8, x8, x8, x17, x8
|
1000
|
| Total | x36, x36, x36, x81, x36
|
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