Mega Man Xtreme 2 walkthrough

Walkthough from Mega Man Xtreme 2.

Choose X or Zero, finish the game with both, start the new game mode, beat Sigma, the end and new boss mode.

Extreme Mode
Note: Collect 4 Heart Tanks for X, 4 for Zero. Make sure to save up bolts in Volt Catfish and Flame Mammoth stage. Optional: turn on Auto Charge and rapid fire Start with Neon Tiger Stage, Collect Heart Tank, Do not collest Capsule, Weapon get for X Enter Volt Catfish Stage, Collect Heart Tank and Capsule, Use Neon Tiger's weaon, Collect Bolts, Weapon get for X Enter Launch Octopus' Stage, Collect Heart Tank and Capsule, Use Neon Tiger's and Volt Catfish's weaon. You may choose who has Weapon get. Enter Xterme Shop, Buy and equip X Part 2+3, Zero Part 1 Enter Wire Spone Stage, Collect Heart Tank, Sub Tank and Capsule, Fight with upgraded X Buster and Z-Saber. You may choose who has Weapon get. Enter Overdrive Ostrich Stage, Collect Heart Tank and Capsule, Fight with upgraded X Buster and Z-Saber or weakness weapon (if you have). You may choose who has Weapon get. Enter Tunnel Rhino Stage, Collect Heart Tank and Capsule (if you have Zero's weapon), Fight with upgraded X Buster and Z-Saber. Weapon get for Zero. Enter Blast Hornet Stage, Collect Heart Tank and Capsule (with Zero's drill), Fight with upgraded X Buster and Z-Saber. You may choose who has Weapon get. Enter Flame Mammoth Stage, Collect Heart Tank, Sub Tank, and X's Capsule with Zero's head and foot parts, Fight with upgraded X Buster and Z-Saber or weakness weapon (if you have). You may choose who has Weapon get. Enter Xterme Shop, Buy and equip X Part 1+4, Zero Part 2+3. Go to Flame Mammoth's Stage  to refill Bolts and Sub Tanks.