Unlockables
     Just  play  the  game  normally.  Be  sure  to get every scan and 
illustration.  It  contributes  considerably to full completion of the 
game.

Equipment Strength Upgrade:   Get all 103 illustrations (100%) 
                              for Tobin's Spirit Guide

Faster Health Regeneration:   Get over 50% of illustrations 
                              for Tobin's Spirit Guide

Gozerian Rookie Outfit:       Get 100% Completion on Gozerian difficulty

Increased Scanning Speed:     Get over 50% of scans 
                              for Tobin's Spirit Guide

Invulnerability:              Get 100% Completion on any difficulty

No Equipment Overheat:        Get all 103 scans (100%) 
                              for Tobin's Spirit Guide