Stunts, jumping ramps, grinding continuously without slowing down too much or falling off between grinding chains. The more enemies destroyed in one go, the more points you get.

This works similarly with Eggman/Tails with their laser guided combos. So keep the rings if you can :) Combos on enemies, these are racked up by the amount of enemies you kill in a row with homing spin without sonic touching the ground between them. Your Rank here is based on your score, your score is stacked up around: The time it takes you to complete the stage, The rings you collect in the stage (10 points per ring collected instantly) (Unlike in other Sonic games, you're not awarded a ring bonus for kept rings at the end, so after the initial 10 points for the ring when it is collected, you don't have to worry about losing them in this mission) It should be noted however that the amount of rings you have changes the bonuses you gain when you pass through check points, once you get enough to be awarded 20 rings or shields that's an extra 200 points just for passing the check point. Mission 1 = Normal Mode This is the default mission and just requires you to finish the stage. Certain missions require certain abilities, which I will outline below. From here you can progress through missions 1 to 5 of each stage. Once a stage is completed in Story mode is is available in free play via the Stage Select Mode. Below is information on what each mission entails, and the minimum requirement for each mission to receive an A Rank. This Achievement requires you to finish all 5 mission of every stage, with every character, with an A Rank.

Sonic adventure 2 xbox 360 achievements