8 hours, save data management.
Saving data no longer obliterates save data that isn't being overwritten.
Fixed whacky walker spawner junk rotations when near the center of the stage.
Portal has a completed state and completion conditions.
Cleaned up phases by thoroughly implementing advance phase stage.
Pick ups bound for places are field clearable.
Lots of play testing, hunting down whats going wrong. I'm going on a break once I can get through the whole game without glaring errors occurring.