What to check
The 2,500-companions objective counts freezing, not defeating companions, and must be completed within one run. After completing the League challenge, follow the game's appearance and capture prompts.
PokéBonk — How do I unlock Articuno?
The short answer
Articuno's League challenge requires all of the following:
- Have 45 members in your League.
- Clear Viridian Forest twice on Hard difficulty.
- Freeze 2,500 companions in a single run.
