To defeat Shin & Fumihiko in Denshattack!, survive the opening rail and wall hazards, build the rainbow rail by tricking through the fire rings, use horn attacks and tricks on yellow doors inside the mech, then finish the boss with repeated slams on the final rainbow climb.
Shin & Fumihiko is a moving Castle Mech fight built around rails, walls, pipes, records, and half-pipes instead of a fixed arena. The route keeps testing your positioning first, then gives you short damage windows where horn hits, tricks, and slam attacks push the fight forward.
Shin & Fumihiko win condition
| Goal | What |
|---|---|
| Survive the entry route | Swap rails, ride walls, and avoid eight balls, red arrows, and signs. |
| Create the rainbow rail | Do tricks through the fire rings until the side charge fills. |
| Damage the mech interior | Use horn attacks in safe pockets and trick through yellow doors. |
| Break the record section | Slam onto the pink stars on the records. |
| End the fight | Ride the final rainbow rail up the mech and slam at each opening. |
KEY!The fight is mainly about staying clean through hazards until the game gives you a damage prompt. If you miss the required trick or slam, the route either keeps looping or makes you ride through more danger than necessary.
Trick through every fire ring in the loop; without that charge, the rainbow rail will not appear and the fight will not advance.
Shin & Fumihiko phases at a glance
| Phase | Main tactic |
|---|---|
| Opening rails and walls | Switch between middle and left rails, then route around eight balls on the walls. |
| Fire-ring charge loop | Jump through each fire ring with a trick to build the rainbow rail. |
| Interior entry | Use the horn immediately, then trick through the first yellow door. |
| Mech tunnel | High jump when walls shake, avoid propellers, and keep opening yellow doors with tricks. |
| Record slam section | Jump and slam onto pink stars as they appear on the records. |
| Half-pipe hazards | Ride around the flaming eight balls and keep adjusting left and right. |
| Final rainbow rail climb | Ride up the boss, slam repeatedly, then take the final hit at the top. |
None of these parts needs a long damage combo.
How to defeat Shin & Fumihiko in Denshattack!
Follow the encounter in order and treat each section as either a dodge check or a short damage window.
STEP 1/28
Start on the opening rails
Ride into the fight calmly and prepare to switch between the middle and left rails.
STEP 2/28
Swap middle to left
Jump from middle to left, then return to middle as the first rail pattern repeats.
STEP 3/28
Move onto the walls
Ride up the wall route and watch the eight balls before committing to a line.
STEP 4/28
Clear the second wall pattern
Go above the first eight ball, below the second, then return to the rail.
STEP 5/28
Clear the third wall pattern
Dodge the three eight balls by going above, below, then above again.
STEP 6/28
Follow the hazard route
Read the path ahead, avoid the red arrows, and move around the signs.
STEP 7/28
Enter the fire-ring loop
Start jumping through the rings of fire, because this section keeps looping until the charge is built.
STEP 8/28
Trick through the fire rings
Perform a trick on each jump to fill the electric bolt and create the rainbow rail.
STEP 9/28
Ride the rainbow rail onward
Once the rainbow rail appears, stay on it to leave the loop and continue the fight.
STEP 10/28
Use the horn on entry
As soon as you enter the mech interior, fire the horn for an immediate damage window.
STEP 11/28
Trick through the first yellow door
Hit a trick on the yellow door to open the route forward.
STEP 12/28
High jump during wall shakes
When the walls shake left and right, use a large jump to stay clear of the slam.
STEP 13/28
Use the horn again
Fire the horn in the next interior pocket to take another chunk of damage.
STEP 14/28
Watch the falling walls
Look ahead as you ride and steer away from the walls that are about to slam down.
STEP 15/28
Open the next yellow door
Perform another trick on the yellow door instead of simply riding into it.
STEP 16/28
Avoid the pipe propellers
Move through the pipe carefully and do not let the spinning propellers clip you.
STEP 17/28
Trick through the next door
Use a trick on the yellow door after the pipe to keep the route open.
STEP 18/28
Take the wall route into damage
Drop onto the wall section and use the horn again when the opening appears.
STEP 19/28
Clear the last yellow door
Perform one more trick on the yellow door before the record section begins.
STEP 20/28
Slam the first pink target
Jump over the record and slam down onto the pink star.
STEP 21/28
Keep jumping and slamming
As the record pattern gets faster, jump early and slam each pink target cleanly.
STEP 22/28
Return through the tunnel
After the record slams, ride back into the tunnel and let the fight throw you into the next arena section.
STEP 23/28
Enter the half-pipe
Move into the half-pipe and start dodging the flaming eight balls.
STEP 24/28
Adjust across the half-pipe
Shift right, then left, then right again as the eight-ball clusters tighten.
STEP 25/28
Ride up the boss
Stay alive through the final fast stretch until the rail route starts climbing up the mech.
STEP 26/28
Take the rainbow road upward
Ride the rainbow rail all the way up the boss to reach the final slam sequence.
STEP 27/28
Slam at each opening
Slam down, ride around, slam again, and repeat as the rail circles upward.
STEP 28/28
Land the final hit
After the last slam sequence, hit the boss at the top to finish Shin & Fumihiko.
Video help
Shin & Fumihiko attacks to dodge
| Attack | How to avoid it |
|---|---|
| Eight balls on walls | Use the above-below-above route through the three-ball wall pattern. |
| Red arrows and signs | Follow the open route and steer around the warning markers before they crowd the lane. |
| Fire rings | Jump through them while tricking, but do not drift into the flames. |
| Shaking wall slams | Use a high jump as the walls shake so the slam passes underneath your route. |
| Falling interior walls | Look ahead and move away from the wall segments dropping into the path. |
| Propellers | Thread the pipe cleanly and wait for a safe line instead of forcing speed. |
| Flaming eight balls in the half-pipe | Ride around the clusters and keep shifting sides as the pattern speeds up. |
Most damage comes from being late to the lane change, not from missing an attack button. Keep your eyes ahead of the train, especially when the arena moves from open rails into walls, pipes, and half-pipe turns.
Damage windows against Shin & Fumihiko
The horn is your direct damage tool inside the mech. Use it right after entering, then again in the later interior pockets after wall and pipe movement sections.
Yellow doors are progress gates, not targets to ram. Each one opens when you perform a trick on it, so treat every yellow door as a required trick prompt.
The pink stars on the records are slam targets. Jump over the mark, slam down onto it, and be ready for the spacing to tighten as the record section continues.
The final damage sequence starts once the rainbow rail carries you up the boss. Slam at each opening on the climb, keep riding around the boss between hits, and finish with the last hit at the top.
Mistakes that cost runs against Shin & Fumihiko
The biggest mistake is coasting through the fire-ring loop without tricks. Jumping is not enough there; the charge only builds when you trick through the rings, and the rainbow rail is what lets you leave that section.
Crashing into eight balls usually comes from reacting to the obstacle directly in front of the train instead of reading the next route. The same habit hurts inside the mech, where missed yellow-door tricks, low jumps during wall shakes, and rushed propeller movement all add unnecessary damage before the final climb.
At the end, do not treat the rainbow rail climb like a victory lap. The fight still needs repeated slam inputs, and rushing the last hazard stretch before the climb can cost a clean finish.
Frequently Asked Questions
Why does the fire-ring section keep looping?
The fire-ring section is a charge check. Tricks performed while jumping through the rings fill the electric bolt on the side, and the route only advances once the rainbow rail appears.
When should you use the horn in the Shin & Fumihiko fight?
Use the horn in the mech interior: immediately after entering, again after the first wall-shake section, and again when the later interior route gives you space after the pipe and wall movement.
How do you open the yellow doors during the boss fight?
Open yellow doors by performing a trick on them. Simply riding into a yellow door does not serve the same purpose, so jump into the trick as the door comes up.
What are the pink stars on the records for?
They mark slam targets. Jump over each record mark and slam down onto it to deal damage during that section.
How do you finish Shin & Fumihiko at the end?
Ride the final rainbow rail up the boss, slam at each stop in the climb, then land the final hit at the top once the repeated slam sequence is done.
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