8 hours, easy mode. But we'll call it normal.
Created easy mode, still ironing out the details for exactly how hard these wave are gonna be but its mostly done. You can select your difficulty from the main menu. Edited the pick up threshold counts for easy mode's reduced enemy count. Practice resets you with the right # of pick ups in easy. Difficulty shown post death. Homing projectiles shot at correct easy thresholds. Phase 5 exit timer. More obvious flyer spawner from location indication. Flyer noise stops on death. Grounded shooters have a higher priority than pick ups when requesting walkers now that pick ups can no longer reclaim their walker from the grounded shooter (which was happening).