Part 7: Beat Skyla — Mistralton City Gym, badge 6

Beat Skyla — Mistralton City Gym, badge 6 opens 6 areas.

Where to go

1. Icirrus City

   Wild: Stunfisk 100% · Lv 15-35, Barboach 60% · Lv 35-55, Palpitoad 40% · Lv 30-33, Shelmet 40% · Lv 30-33 +2 more

2. Twist Mountain

   Wild: Drilbur 100% · Lv 28-31, Boldore 49% · Lv 28-31, Cubchoo 45% · Lv 28-31, Gurdurr 30% · Lv 28-30 +2 more

3. P2 Laboratory

   Wild: Frillish 100% · Lv 5-15, Alomomola 95% · Lv 5-20, Audino 95% · Lv 28-31, Horsea 55% · Lv 35-55 +11 more

4. Mistralton Cave

   Wild: Drilbur 100% · Lv 28-31, Boldore 50% · Lv 28-31, Woobat 30% · Lv 28-30, Axew 20% · Lv 30-31 +1 more

5. Route 18

   Wild: Frillish 100% · Lv 5-15, Alomomola 95% · Lv 5-20, Audino 95% · Lv 28-31, Horsea 55% · Lv 35-55 +14 more

6. Route 17

   Wild: Frillish 100% · Lv 5-15, Alomomola 95% · Lv 5-20, Horsea 55% · Lv 35-55, Finneon 45% · Lv 35-55 +5 more

Everything you can have caught by this checkpoint · Open the interactive guide

It also doesn't say when 4 of its areas open up, so they are listed together in the last part rather than guessed into the story.