Final Weapon — Sigma
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Final Weapon: Sigma
Sigma returns for one last confrontation in three fights back to back. Go in with full Sub Tanks and topped-off Weapon Energy — each phase has its own weakness technique.
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Sigma — Phase 1: Grim Reaper
Sigma (Grim Reaper)
A floating reaper form that teleports nonstop. Ryuenjin out of every teleport, then retreat — don't linger in his body.
Attacks- Boomerang Scythe — throws his scythe; it spins and chases around the room
- Energy Spheres — fires orbs that slowly home in on you
- Teleport — vanishes and reappears constantly, above or to the sides
Strategy- Weak against Ryuenjin
- Close in the instant he reappears and use Ryuenjin — since Zero fights up close, the timing has to be precise: hit him and immediately back off to avoid contact damage
- When he throws the scythe, wall-climb to the very top and stay there until the weapon returns to him
- For the energy spheres, dash along the ground repeatedly
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Sigma — Phase 2: True Form
Sigma (True Form)
Faster and hits harder than the Reaper form. Live in the top wall corner, drop for a Raijingeki only into his recovery, then climb straight back up.
Attacks- Scythe Throw — buries his scythe in a wall or the floor and electrifies most of the arena
- Eye Laser — fires a laser from his eyes that sweeps across almost the whole floor
- Charge — rushes across the screen at high speed
Strategy- Weak against Raijingeki
- Raijingeki has a slight animation delay that leaves you exposed — only use it on the ground when Sigma has finished a charge or laser and is standing still recovering
- Same as with X: hold the top corner of the wall to dodge the eye laser and the charge
- Only drop down when he sticks the scythe into the upper wall
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Sigma — Phase 3: Earth & Sky
Sigma (Giant — Earth & Sky)
The final phase is two massive targets sharing one room. Ride the spat-out heads up to the ground robot with Sougenmu running, and answer the floating head with Kuuenzan-boosted saber hits while dash-holding into its wind.
Attacks- Giant Robot (Earth) — a massive floor-covering laser and bursts of fire; constantly spits out small floating heads (red and blue)
- Floating Head (Sky) — a strong wind that pushes you toward the floor spikes, spits debris, and fires large energy bolts
Strategy- Giant Robot weakness: Sougenmu. Activate Sougenmu for your holographic clone, use the small floating heads as platforms to get level with the robot's face, and land every airborne saber hit you can — the clone doubles each cut and drains its health extremely fast
- Floating Head weakness: Kuuenzan / normal attacks. Unlike X, Zero's ground rush (Shippuuga) can't reach that height — jump and hit its face with the saber, ideally with Kuuenzan equipped for a bigger hitbox. During the wind attack, dash-jump toward it constantly so you don't fall into the spikes while you keep attacking
- Both targets alternate attacks in the same room — deal with whichever is active and save Sub Tanks for the last stretch
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