Operation: Cascadia

This looks interesting. I could help out, I guess.

Edit: Made some map ideas.

 Spoiler

Sorry about the colors, yo.

Layout key:
. = fillers
_ = flat ground
l/ and \ = slope
II = ladder/rope
O = portal
i = spikes
l = wall
V = lava spew
& = NPC

Cascadia: Outskirts of Cascadia
Right outside Cascadia. Weak monsters roam here.
Monsters: Meercat (lv29), Fire Boar (lv32)
NPCs: None
Portals: Cascadia: Cascadia, Cascadia: Near the Cave
Layout:
l_________........_______Ol
......II......\____/
......II
......II..........___
lO__II______/....\_______l

Cascadia: Near the Cave
Directly in front of the Cascadian Caves.
Monsters: Fire Boar (lv32), Jr. Boogie (lv35)
NPCs: Jewel Hunter
Portals: Cascadia: Outskirts of Cascadia, Cascadia: Cave Entrance
Layout:
......................................................___&___
...................................____________/...........\____
........................______/.......................................\_____Ol
..................___/
..........____/
lO____/

Cascadia: Cave Entrance
The dark, and large, entrance of the cave. The monsters are tougher than outside.
Monsters: Flyeye (lv41), Iron Hog (lv42), Jr. Cerebes (lv43)
NPCs: None
Portals: Cascadia: Near the Cave, Cascadia: Upper Chamber, Cascadia: Emerald Cave
Layout:
lO_______________
.............II
.............II
........._i_II_i__i__i_i__i__i___i_______i__
..............................................II
lO____i__i__i__i__i__i__i__i__i____II__________i__i__i__i__Ol

Cascadia: Emerald Cave
There are deposits of emerald in the walls. The monsters here often take and keep chunks of them.
Monsters: (all have chance of dropping emerald ores) Nependeath (lv42), Iron Boar (lv45), Dark Nependeath (lv47)
NPCs: None
Portals: Cascadia: Cave Entrance, Cascadia: Graveyard Within the Cave I
Layout:
lO______................_____
..........,.\_________/
.....................II_____________/
.....................II
........_______..II.._______
........_______..II.._______
l_...................II......................_______[COLOR="Blue"]O[/COLOR]l
..\_____________________________/

Cascadia: Graveyard Within the Cave I
The first part of a spooky graveyard in the Cascadian Caves. Undead monsters roam here.
Monsters: Jr. Wraith (lv37), Paper Lantern Ghost (lv40), Wraith (lv47)
NPCs: None
Portals: Cascadia: Emerald Cave, Cascadia: Graveyard Within the Cave II
Layout:
lO_______________________________
l______________II_________________
.......................II
.......................II
.......................II
l______________II__________
.........................................\______
....................................................\_______________l
..............................................................II
..............................................................II
.............................lO___________________II________l

Cascadia: Graveyard Within the Cave II
A section of the graveyard in the cave. Undead monsters roam here.
Monsters: Coolie Zombie (lv57), Minor Zombie (lv57)
NPCs: None
Portals: Cascadia: Graveyard Within the Cave I, Hidden Street: Toy Burial Grounds, Cascadia: Graveyard Within the Cave III
Layout:
l__O__
......l________............_____
................l_______..................._______
......................l_________
..............................l_________.................._Ol
...................................l_________
...........................................l_____________Ol

Hidden Street: Toy Burial Grounds
This is where toys were ceremonially buried long ago. They have reawakened and are haunting this area of the graveyard.
Monsters: Soul Teddy (lv63), Death Teddy (lv85)
NPCs: None
Portals: Cascadia: Graveyard Within the Cave II
Layout:
........................._______
.............._______l..............________
lO_______l.....................................______l
....__II_________________.....________
.................................................II
.................................................II
l_______________________________II________l

Cascadia: Graveyard Within the Cave III
A final zone of the graveyard. Powerful monsters haunt the area.
Monsters: Dreamy Ghost (lv100)
NPCs: None
Portals: Cascadia: Graveyard Within the Cave II, Cascadia: Den of Rituals
Layout:
.................................______[COLOR="Blue"]O_____[/COLOR]l
........................................II
................_________..........II
lO________/...............\_____II______l

Cascadia: Den of Rituals
The room where early inhabitants of the island performed their sacrificial rituals. This room has long been abandoned.
Monsters: Blood Giant (lv116), Blood Golem (lv122)
NPCs: Wispy Spirit
Portals: Cascadia: Graveyard Within the Cave III
Layout:
........____O___
..............II
..............II.....................____________________&l
..............II..............____/
l________II________/

Cascadia: Upper Chamber
A floor higher above most of the cave. It's sweltering up here.
Monsters: Firebomb (lv51), Red Slime (lv60)
NPCs: None
Portals: Cascadia: Cave Entrance, Cascadia: Magma Cavern, Cascadia: On Top of the Cave
Layout:
........................._O_
....................._____________Ol
........_______
............________
................._________
lO_________/..........__________l
............l_____________l
......................II
......................II
.................l___II___l

Cascadia: Magma Cavern
A pathway surrounded by lava.
Monsters: Bain (lv90), Red Dragon Turtle (lv93)
NPCs: None
Portals: Cascadia: Upper Chamber, Cascadia: Cooling Room
Layout:
lO__V___V___V___V___V__V___V__Ol

Cascadia: Cooling Room
A room designed to cool travelers off after the heated path. An Ice Drake appears here once in a while.
Monsters: Ice Drake (lv64)
NPCs: Weary Traveler
Portals: Cascadia: Magma Cavern
Layout:
lO____&__Ol

Cascadia: On Top of the Cave
It's the top of the cave. It's quite high up, so the temperature is very cold. Cascadia is viewable from up here.
Monsters: Transforming Jr. Yeti (lv50)
NPCs: None
Portals: Cascadia: Upper Chamber, Cascadia: Down the Steps
Layout:
lO_____
...........\________________
......................................\____Ol

Cascadia: Down the Steps
It's a downhill stairway into the Casca Forest.
Monsters: Ice Drake (lv64), Yeti and Pepe (lv78)
NPCs: None
Portals: Cascadia: On Top of the Cave, Casca Forest: Sunlit Dawn
Layout:
lO______
........________
................__________
...................._____
......_____...........______________
.............................__________
......................................______________Ol
l_______________________________________l

Casca Forest: Sunlit Dawn
The sun shines bright here. The monsters here aren't too powerful compared to the path to get here.
Monsters: Copper Drake (lv45), Hodori (lv50)
NPCs: None
Portals: Cascadia: Down the Stairway, Casca Forest: Half-lit Path I
Layout:
lO__...................____Ol
..................._____
...........______
lO___________________l

I didn't make any new monsters, and I'm not sure if this is cheap or not.

I made some new monsters >:] I guess I'll post the stats later.