 Each mission has a timed duration that the player must beat , with two tiers of time bonus . The player is rewarded with space credits dependent on the amount of cargo that survived the mission and how quickly they completed it . Reputation , displayed as stars , is rewarded based whether or not the player met cargo or time thresholds . Space credits are used between missions in order to purcase special abilities and bonuses for modules , while gaining reputation unlocks new modules . 
