It's said that the rival may upgrade to the 2nd phase but I wonder how this happens?
These are his levels for the 2nd phase.
Staraptor Lv 71
Roserade Lv 69
Floatzel Lv 69
Rapidash Lv 69
Heracross Lv 71
Snorlax Lv 73
Starter Pokemon Lv 75
If any of you members know how to unlock the 2nd phase of this survival area rival battle in Platinum, please tell me.