Here is the unlockable storyline called Grassmarket Street. It takes place 6 months after the events from the main storyline and this time puts you to rescue the commander's daughter while everyone else off screen saves the hostages.
I decided to play this mode on Special but however my G-Con 2 was playing up. Sometimes when I aim at something the bullets just either scatter or the bullets won't show up on screen. I ended up losing plenty of lives because of that. I also made a jump cut at the boss due to the 3DS recording time.
![](https://i.ytimg.com/vi/mguPkswal_0/mqdefault.jpg)