Get a key-card
Get a shotgun
Get a mine
Read the note #2
Read the note #3
Ride a cart
Escape from the big meanie
Find the secret location #2
Defeat the big meanie
Use the turret
Escape
Get a medkit
Find the secret location #3
Get a skill point
Spend a gear to get upgrade on workbench
Perform a hack
Read the note #1
Get a pipe
Get a grenade
Find the secret location #1
Get a first gear
Destroy a cylinder