Simulators 
     Nanostray 2 has unlockable "Simulator" modes. These are minigames
different  from  the main game, and are unlocked via the completion of
challenges.

Unlockable:         How to Unlock:

Nanobreak           Complete Challenge Set A 

Nanorush            Complete Challenge Set B 

Nanotorque          Complete Challenge Set C 

Nanogrid            Complete Challenge Set D 


Arcade Mode Stages 
     Arcade  Mode is open from the start, but you need to play through
Adventure Mode in order to unlock the stages within.

     These  are  the same stages as Adventure, though you can play for
leisure or high scores.

     When  you have the choice to pick one of multiple stages, picking
that stage will unlock the respective level for Arcade.