The Sunken Citadel

The Sunken Citadel
Type	Elite
Campaign	Rising Tides
Environment	Beach
Previous Level	Storm Atoll
Next Level	n/a

With the Lord of the Sea by our side, we have prevailed in battle! However, the Deep Devils may yet have the last laugh: they have awakened Leviathan, the evil deity of the depths they worship. If Leviathan attains its full power, there is nothing in the world that can stop it.

No time to regroup or recover, we must head into Leviathan's lair, the city of Ryly'eh, once the seat of Regnos' rule. It is time to defeat the Deep Devils and their malevolent god once and for all!

The Sunken Citadel is the eighteenth stage in Kingdom Rush: Frontiers, and the third and final stage in the Rising Tides mini-campaign.

Scenery

• Shrine of Regnos x1

Waves

Campaign

• Strategic Point x13
• 1700 gold

Wave	Enemies (West > South) [Path]	Enemies (West > South) [Water]	Enemies (North > South) [Water]	Enemies (North > South) [Under Bridge]	Enemies (North > Southeast) [Path]	Income
1	Greenfin x12		Greenfin x16			560
2			Greenfin x12 Redspine x2		Greenfin x9	500
3	Greenfin x9	Greenfin x7			Greenfin x10 Redspine x1	560
4	Greenfin x14		Greenfin x3 Blacksurge x1		Redspine x4	550
5	Greenfin x12 Redspine x1		Greenfin x16 Blacksurge x2			700
6	Greenfin x9		Bloodshell x1	Deviltide x9		480
7		Redspine x3 Deviltide x6			Greenfin x8 Bluegale x1	460
8	Redspine x4		Blacksurge x1 Bloodshell x1		Greenfin x4 Bluegale x3	590
9	Greenfin x9	Greenfin x13	Greenfin x13	Greenfin x13	Greenfin x13	1220
10	Redspine x3 Bluegale x2			Redspine x2 Deviltide x8	Greenfin x9 Bluegale x2	780
11	Bluegale x3		Redspine x1 Bluegale x3	Redspine x1 Bluegale x3		620
12			Bloodshell x3		Bloodshell x2	600
13	Deviltide x9	Deviltide x13	Deviltide x13	Deviltide x13	Deviltide x13	1220
14	Greenfin x15 Deviltide x6	Blacksurge x3			Bluegale x1 Bloodshell x2	870
15	Bluegale x4	Bloodshell x1	Redspine x8 Bluegale x2	Redspine x2 Bluegale x1	Bluegale x1 Bloodshell x2	1240

Leviathan appears at the northeast corner to attack after wave 15. This is not counted as a wave.

-	Enemies (West > South) [Path]	Enemies (West > South) [Water]	Enemies (North > South) [Water]	Enemies (North > South) [Under Bridge]	Enemies (North > Southeast) [Path]	Income
Boss fight	Deviltide x20 Redspine x4 Bloodshell x1			Greenfin x10 Deviltide x4	Greenfin x20 Redspine x4 Deviltide x4 Bloodshell x1	1720

Heroic Challenge

• Strategic Point x13
• 1800 gold

Wave	Enemies (West > South) [Path]	Enemies (West > South) [Water]	Enemies (North > South) [Water]	Enemies (North > South) [Under Bridge]	Enemies (North > Southeast) [Path]	Income
1	Greenfin x12		Greenfin x12			480
2	Deviltide x16		Greenfin x16		Greenfin x12	880
3	Greenfin x10		Greenfin x12	Redspine x2	Deviltide x10	720
4	Deviltide x11	Bluegale x2	Greenfin x13	Blacksurge x1	Bloodshell x1	770
5	Bloodshell x1	Bluegale x4	Greenfin x21			780
6	Bloodshell x2	Bluegale x3	Greenfin x19	Blacksurge x2 Greenfin x3	Bloodshell x2	1200

Iron Challenge

• 3500 gold
• Strategic Point x11
• Rebuilt Shrine of Regnos x3
• Archer, Barracks not allowed

Wave	Enemies (West > South) [Path]	Enemies (West > South) [Water]	Enemies (North > South) [Water]	Enemies (North > South) [Under Bridge]	Enemies (North > Southeast) [Path]	Income
1	Blacksurge x7 Bluegale x3 Bloodshell x1	Greenfin x15 Bluegale x2	Blacksurge x7 Redspine x2 Greenfin x4 Bloodshell x3 Bluegale x2	Greenfin x33	Greenfin x88	4480

Related Achievements

 SQUID IN ITS INK Defeat Leviathan, the Underwater God.

Trivia

• The name of the city, Ryly'eh, is a reference to R'lyeh, the nightmare corpse-city that appears in the H. P. Lovecraft short story The Call of Cthulhu, where Cthulhu sleeps, dreaming.
• On the map, the level flag is placed on a location named Mompoey Island, which is named after Pablo Realini Mompoey, one of the co-founders of Ironhide Game Studio.
• On the beach near the water-side exit flag, is a half-buried stone hand. This is a reference to a famous scultpure called The Hand by Chilean artist Mario Irarrázabal. It is located in Punta del Este, in Uruguay, which is where Ironhide Game Studio is based.