|Mienfoo||Lv. 39, 42||25%|
|Marill||Lv. 40, 42||10%|
|Mienfoo||Lv. 44, 47||25%|
|Marill||Lv. 45, 47||10%|
|Shaking Grass / Swirling Dust||Level(s)||Rarity|
|Audino||Lv. 39 ~ 42||85%|
|Basculin||Lv. 15 ~ 40|
|Basculin (Blue)||Lv. 15 ~ 40|
|Marill||Lv. 15 ~ 40||30%|
|Surfing (in surfacing fish)||Level(s)||Rarity|
|Marill||Lv. 15 ~ 40||60%|
|Basculin (Blue)||Lv. 15 ~ 45|
|Basculin||Lv. 15 ~ 45|
|Azumarill||Lv. 25 ~ 45||5%|
Right at the very start of the route is an Ace Trainer that'll battle you using a Starmie L47 and a Drapion L47. Beat him, then head on up the stairs and to the north. There's a hidden Carbos in the northwest empty spot in the grass.
Now head south and down the steps, then up the stairs to the thick grass. There's a Backpacker up there who will fight you with her Vanillish L45 and Bouffalant L45. Head down the steps to the right of her and then you can walk north into the thick grass. To the northwest in the thick grass is a PP Up, while over to the east is an Amoonguss L47 (!) disguised as an item.
Alright, leave the thick grass and then head up the steps to the west. You'll see Terrakion just chillin' there! Suddenly, though, Colress shows up and talks a bit about Terrakion. He'll then ask you something. Sure, just go ahead and say Yes. Either way, he'll give you the Colress MCHN key item, which you can use to clear away a certain Crustle that blocks your path later on.
Colress then leaves and says he's heading south to Route 21 or something like that. Well, at this point, you could definitely go after him, but there's still more to see on Route 22 — including a Terrakion right next to you — so you might as well continue exploring.
Save your game before fighting Terrakion, just in case you knock it out on accident. If you do knock it out or run, you'll have to wait until after you beat the game for it to reappear, so try to get it right the first time.
|Terrakion Lv. 45|
You don't have to fight Terrakion, either; you can just leave it there for later, which may be good if you aren't equipped with a sufficient amount of Dusk Balls, Ultra Balls, or Timer Balls.
Patience Pays Off
Not satisfied with having your Terrakion only at level 45? Well, guess what: if you knock it out and then return here after you've beaten the game, you'll find it at level 65 instead! Unless you plan on using Terrakion from this point on, you're better off knocking it out and catching it later.
There are two branches you can go from Terrakion. You can head south, through the normal grass, or you can cross the bridge plank thing. Start by walking across the bridge plank thing, but fall down to pick up the Rare Candy, then go over and fight the Hiker with his Nosepass L45 and Steelix L45.
Hop down the ledge and then head up the planks. Heading over to the left takes you to where you would have been had you not have jumped, with a hidden Green Shard. Head over to the right instead and you'll find a boulder you can move with Strength to grant you a nice shortcut to the entrance, as well as a PKMN Breeder with a Camerupt L45 and a Grumpig L45. Surf to the west of him and you'll find a Calcium over in the trees (it may not be easy to see, but it's there).
Head back across the planks and over to the west of where the Hiker was. There's some steps there that have a Poison Barb to the south. Heading north actually leads you back to where Terrakion was, so just climb down the steps to the west instead and make your way north.
Over here, there's plenty of grass, as well as a few items. The southernmost one is a Red Shard, while the one to the northeast of that is actually another Amoonguss L47. Keep going north to find a Backpacker, who uses a Swinub L45 and a Darmanitan L45 (yikes!). Over to the west of him is the entrance to the Giant Chasm. You can enter it if you want, but there's nowhere you can really go, since two Plasma Grunts are blocking the path. There are still some neat Pokemon to find inside, though. Your call.
Head south of the entrance to the Giant Chasm and you'll find an Ace Trainer with an Arcanine L47 and an Excadrill L47. Just past her is a path to the wooden planks. Go up on them and then, when you reach a fork, just keep heading north to find a Max Potion. Go back to where the fork was, make your way across the zigzaggy part, and then head over to the east. It may look like it takes you to a dead end, but there's actually another Hidden Grotto over there.
|Lostlorn Forest Hidden Grotto|
|Amoonguss Lv. 45-50
|Pelipper Lv. 45-50
|Mienfoo Lv. 45-50
Alright, well that's all there is for you to do here. With the Colress MCHN in your possession, now's a great time for you to head back to Humilau City and then head south onto Route 21!