As Sonic, Leaf Storm Act 1 is your first taste of speed. Start by boosting through the initial straightaway, collecting rings and destroying any Crabmeats in your path. You'll encounter several vertical sections where springs will launch you between screens. Always try to land on the higher platforms to maintain momentum and find more rings. There's a section with strong winds that will push you back; use your Boost to power through it, or time your jumps carefully to avoid being blown into spikes. Look for a series of grind rails that will take you across a large gap – these are excellent for building speed and your Boost Gauge. Near the end of the act, you'll encounter a large loop-de-loop. Maintain your speed to clear it successfully. The goal ring is usually located after a final series of springs or a short dash. Aim for a time under 1:00 for an S-Rank.
Keep an eye out for hidden pathways accessible by destroying specific blocks with a Spin Dash or by taking a high route. These often lead to extra rings or even 1-Up monitors. Practice your Homing Attack on groups of enemies to keep your combo going and fill your Boost Gauge efficiently. use your Boost whenever you have a clear path to maximize your speed and minimize your time.