Part 1, Part 2, Part 3, Part 4, Part 5, Part 6
Raiden Blitz The Traveler[]

In this feat, Raiden blitz and one-shots Traveler who was using his electro to travel at the speed of lightning.

Distance Traveler travel (1.7/129*308)=4.059m
Raiden distance range attack (1.7/129*209)=2.754m
Assume that Raiden swing her polearm at 180 degrees or 3.142 radians (2.754*3.142)=8.653m
Lightning Speed: 440,000m/s
8.653*440,000/4.059=937,994.580m/s or Mach 2,734.678 (Massively Hypersonic+)
Neuvillette Creates Rainstorm[]
Neuvillette can create a rainstorm that covers all of Fontaine, based on his sad emotions.

Distance 1 (100,000/81*361)=445,679.012m
Distance 2 (100,000/81*423)=522,222.222m
Assume the area is a rectangle (232,743,483,945.405m2)
Average cumulonimbus thickness is 9.9km
Average sealevel height for cumulonimbus is 4km.
Cloud Mass (1,122,932,662,213,824.5kg)
Then for j/kg its 4,000 j/kg.
1,122,932,662,213,824.5*4,000/4.184e18=1.073 Gigatons (Large Mountain Level High 7-A)
Neuvillette Send Out Hydro Shockwave[]

After Neuvillette gained his sovereign's authority, he shot a chunk of hydro into the clouds, which exploded and sent a hydro shockwave across Fontaine in a short amount of time.

Top of Mt. Elynas length (100,000/81*17)=20,987.654m
Hydro thickness (20,987.654/169*3)=372.562m
Neuvillette was at Opera Epiclese house when he launch the attack.
Radius distance Neuvillette launch his hydro shockwave (100,000/81*232)=286,419.753m
I'll be using this volume for the hydro shockwave that went across Fontaine.
Volume (9,223,372,040m3)
Average water density is 1,000 (9,223,372,040*1,000)=9,223,372,040,000kg
The hydro ring took about 0.417 seconds to travel across Fontaine.
286,419.753/0.417=686,857.921m/s or Mach 2,520.389 Massively Hypersonic+
.5*9,223,372,040,000*686,857.921^2/4.184e21=519.998 Teratons (Large Country Level High 6-B)
Tatarigami Energy Blows Up Kannazuka Island[]

There is a statement saying that if Tatarigami energy gets out of control, it could blow Kannazuka Island sky-high. This energy is the remnant power of Orobashi before his death.

Island length (100,000/81*69)=85,185.185m
Island width (100,000/81*54)=66,666.667m
Island height (85,185.185/461*159)=29,380.574m
Assume the volume is a rectangular prism, with 60% of it covered by land (166,852,642,940,675.877*.6)=100,111,585,764,405.526m3
Fragmentation
100,111,585,764,405.526*8*1,000,000/4.184e18=191.418 Gigatons (Large Island Level High 6-C)
Violently Fragmentation
100,111,585,764,405.526*69*1,000,000/4.184e21=1.651 Teratons (Small Country Level Low 6-B)
Pulverization
100,111,585,764,405.526*214*1,000,000/4.184e21=5.12 Teratons (Small Country Level Low 6-B)
Melting
100,111,585,764,405.526*6,174.5*1,000,000/4.184e21=147.739 Teratons (Large Country Level High 6-B)
Vaporization
100,111,585,764,405.526*25,700*1,000,000/4.184e21=614.93 Teratons (Large Country Level High 6-B)