Blue still wasn't sure why these pirates had attacked her home, or what their final goal was. Chasing them across Azure Star's islands, through the thick forests and up a the jagged peaks hadn't done much to enlighten her at all, although Blue found her enjoying all the combat, it was a break from the dull peace she had been used too. Blue never considered herself a fighter despite her powers but her mind set was changing, and these odd robots made for a fun challenge.
Still, of all the odd things she had experienced so far it didn't prepare her for the sight at the top of the mountain. Within the clouds a city floating in the sky, clearly made by the same people who built the ruins dotting Azure Star's landscape...and white beard's crew swarming all over. Jumping to a broken ladder, likely used for maintenance back in the day she managed to surprise a few Buccaneers who had been setting up make shift defenses.
Level 4 is easiest the most dangerous level so far, the crumbling ruins have created some treacherous walkways and enemies are placed to take advantage of these jumps. Buccaneers in all types appear here minus the lumberjack and Smiley Copters and Spine Mines also make their homes in perilous locations.
Blue also encounters some of White Beard's heavier forces. The Buccaneer Walker and aircraft pose a serious threat to her as she can't easily dispose of them.
Finally though Blue pushes through and finds an entrance leading deeper into the city, something calls to Blue something she can't quite place but what ever it is she knows this is what White Beard is after and she'll beat him there.