Complete Sky Lagoon without taking damage using X
Complete Web Spider Stage without taking damage using only the X Buster
Complete Cyber Peacock Stage without taking damage using only the X Buster and only getting S Rank in act 1
Complete Storm Owl Stage without taking damage using only the X Buster [No Ride Armor]
Complete Magma Dragoon Stage without taking damage using only the X Buster [Ride Armor OK until reach boss]
Complete Jet Stingray Stage without taking damage using only the X Buster
Complete Split Mushroom Stage without taking damage using only the X Buster
Complete Slash Beast Stage without taking damage using only the X Buster [Ride Armor OK]
Complete Frost Walrus Stage without taking damage using only the X Buster
Complete Space Port without taking damage using only the X Buster using Unarmored X
Complete Final Weapon Stage 1 without taking damage only using the X-Buster [Ride Armor OK, SEE ACHIEVEMENT COMMENTS PLEASE]
Complete Final Weapon Stage 1 without taking damage using Zero [Rider Armor OK]
Complete The Boss Rush without taking damage using only the X Buster using Unarmored X
Defeat All Three Forms of Sigma damageless, Buster only (except for the 1st form) using Unarmored X [SEE ACHIEVEMENT COMMENTS]
Enter the sub-boss door in Storm Owl stage without letting the platform get close to the spikes from the side [No Nova Strike]
In the second act of Jet Stingray's Stage, get close to the boss door with the boss himself appearing on the screen
Skip Split Mushroom Sub-Boss
Defeat Web Spider before letting him use his second pattern [Only works in the boss rush]
Defeat Magma Dragoon with Zero under 15 seconds
Defeat Slash Beast with Zero under 15 seconds
Defeat Jet Stingray with Zero without using his weakness and without allowing to use his horizontal dash (after the Tornado)
Defeat Split Mushroom without using his weakness and without allowing him to use his spinning attack that he can wall kick
Defeat Iris before she uses her laser attack
Defeat Sigma's second form with Zero only letting him spin his Scythe once
After defeating your first Maverick, beat the rest of the game with X without using the X-Buster and the helmet upgrade
Beat the game with X from Sky Lagoon to Final Weapon in AlexBaiano Mode (AKA without EVER pressing left) (See Comments)
Complete Sky Lagoon to Final Weapon using only the X-Buster (Except Sigma's 1st) without upgrades, hearts, tanks and dying
Complete Sky Lagoon to Final Weapon with Zero without hearts, tanks and dying
Defeat General with Zero without Learned Techniques, and only pressing the attack button at max 6 times
Reach the Arm Capsule in Storm Owl Act 2 without pressing left