Achieving an A-Rank in every stage is a core challenge in Sonic Adventure 2. The criteria for an A-Rank typically involve a combination of high score, fast clear time, and minimal damage taken. For Speed stages, focus on finding optimal routes, utilizing shortcuts, and maintaining maximum speed through grind rails and Homing Attack chains. For Treasure Hunting stages, efficient use of the radar and knowing common shard spawn points is key. For Mech stages, destroy all enemies quickly and avoid taking damage. Always aim for 100 rings for a significant score bonus. Practice is paramount; replay stages multiple times to memorize layouts, enemy placements, and optimal paths. Don't be afraid to restart if you take early damage or make a major mistake.
