1. The document describes Jowen Roche's 2D game workflow, including creating sprites, modifying sprites with collision masks, coding sprite movement, creating levels, adding boundaries, backgrounds, particle effects, projectiles, enemies, health variables, scoring, and more.
2. Key steps included creating a spaceman sprite, adding collision masks, coding movement commands, making a scrolling level, adding jet particle effects, programming enemies that spawn and move, and implementing a health bar and scoring system.
3. Over 17 steps, Jowen created the basic framework for a 2D space shooting game with playable and enemy sprites, levels, particle effects, projectiles, health systems, and scoring.