Extra Stages · River City Relay · 2/3
Clear XP4,000
Base HP400,000
Map length4,800
Max enemies15
Spawn interval0.03s
Enemy traits 
Dark 
Traitless 
Metal
Dark Traitless Metal Boss
Spawn timeline
Scroll sideways to see more. For enemies with a base HP condition, drag the orange circle to set when they appear.
Enemies 9 types
| Enemy | Count | Mag. | HP | Attack | First | Respawn |
|---|---|---|---|---|---|---|
| From the start 5 types | ||||||
 Doge Dark | 2 | 400% | 20,000 | 8,000 | 6.67s | 20–26.67s |
 Gory | 2 | 1200% | 12,000 | 960 | 12s | 16.67–23.33s |
| Doge Dark | Unlimited | 400% | 20,000 | 8,000 | 16.67s | 18–24.67s |
 White Wind | Unlimited | 600% | 30,000 | 600 | 23.33s | 16.67–26.67s |
 Otta-smack-u | 2 | 200% | 60,000 | 2,994 | 30s | 6.67–13.33s |
 Ms. Sign | Unlimited | 100% | 10,000 | 1 | 900s | 900s |
| Once base HP ≤ 99% 6 types | ||||||
| Doge Dark Boss | 1 | 100% | 5,000 | 2,000 | Immediately | — |
 Large Iron Ball | 1 | 300% | 60 | 7,500 | Immediately | — |
 Dark Otter | 1 | 100% | 175,000 | 6,497 | Immediately | — |
| Otta-smack-u | 1 | 200% | 60,000 | 2,994 | Immediately | — |
 Shadow Boxer K | 1 | 100% | 80,000 | 4,997 | Immediately | — |
| Otta-smack-u | 3 | 200% | 60,000 | 2,994 | after 6.67s | 10–16.67s |
| Large Iron Ball | 1 | 300% | 60 | 7,500 | after 10s | — |
| Dark Otter | 3 | 100% | 175,000 | 6,497 | after 15.33s | 13.33–20s |
| Shadow Boxer K | 4 | 100% | 80,000 | 4,997 | after 20s | 6.67–13.33s |
| Large Iron Ball | 2 | 300% | 60 | 7,500 | after 26.67s | 13.33s |
 Kang Roo | 2 | 1200% | 48,000 | 3,000 | after 33.33s | 13.33–20s |
HP and attack include the magnification.
Clear rewards
If the reward chances add up to more than 100, the rows are rolled in order and each later row shares what is left.
Where it appears
This is an EX stage. It can appear after clearing the stages below.