You Should do these things after the game.
After game
- Back at Home— Twinleaf Town, Sandgem Town, Upgrading PokéDex to National PokéDex
- Routes 219-211, Pal Park, Victory Road, Route 224
- Canalave City, Fullmoon Island, Back to Canalave City, Catching Cresselia, Iron Island
- Route 214, Spring Path, Sendoff Spring, Turnback Cave, Catching Giratina
- Snowpoint City, Snowpoint Temple, Catching Regigigas, Heading towards the Battle Zone
- Fight Area, Battle Park, Battle Tower, Route 225
- Survival Area, Routes 226-227, Stark Mountain
- Back in Survival Area, Back to Stark Mountain, Catching Heatran, Route 228
- Route 229, Resort Area, Route 230, Back to Fight Area, Rival rematch
Source
I love Weird things ¯(°_o)/¯
