Upon arriving in Geosenge Town, you'll see yet another Team Flare Grunt snooping around.
They seem to be everywhere.
Talk to the old man in the Pokemon Center and he'll give you TM66 Payback.
Go southwest of the Pokemon Center to pick up a Soft Sand.
Go to the house northwest of the Pokemon Center and talk to the nurse for an Everstone.
There's a Hotel Marine Snow right near the entrance to the city. Go to the last room on the
second floor to meet up with Mr. Bonding, who'll give you another O-Power.
You can find a hidden Timer Ball in the northwestern corner of the hotel's backyard.
Head up north along the sides and you'll bump into the Team Flare Grunt again.
Serena comes by to comment on how weird those guys are. If you follow him up
north, you'll reach a dead end.
The east side path out of the city is now open. When you try to leave, the
Leader Korrina and her Lucario from earlier will come by to challenge you to a battle.
Proceed eastward onto Route 11.
Fight the Psychic and pick up the Sitrus Berry under the tree. Pick up
the hidden Super Potion on the rock underneath the crystal. These crystal
rocks are all over this route. Soon, Professor Sycamore Holo Casts you telling you
to visit the "Mega Evolution guru" in Shalour City. Cut the tree to the left
and slide down the mudslide to pick up TM69 Rock Polish.
Before entering the Reflection Cave, head south to pick up a Hyper Potion.
Go up the steps to pick up a hidden Thunder Stone at the top.
There's no biking or rollerblading allowed in the Reflection Cave.
There are trainers with some pretty tough Pokemon in here, so brace yourself.
The walls in here are basically mirrors, hence the name.
Battle the Backpacker facing the wall.
Head east in the narrow path to pick up a Revive.
Head north to pick up a Nest Ball.
Head all the way south and up the steps to the plateau to pick up a Moon Stone.
Then, head east, down the steps.
The first girl you see will heal your Pokemon. Continue east, around the corner,
up the steps, and pick up the Black Belt. Now go south.
You'll bump into Tierno, who'll give you TM70 Flash. Continue southeast,
pick up the Escape Rope along the way. Fight the trainers along the way.
After the double battle, go east down the steps to pick up a Hyper Potion.
Go south and down the stairs. Walk north and pick up the Earth Plate.
Head west. You'll notice a door in the mirror. Head south into that door and pick
up TM74 Gyro Ball. If you continue down this path, you'll end up in a room
with an area that's brightly lit up. There's nothing here for now, but possibly
in the future...Hop over the ledge and back up the steps.
Go west and pick up the Iron and head up the stairs. Fight the last Hiker.
When you head out the exit, you'll be in Shalour City.