Revenge of Carnage (Merciless) is the second stage in River Acheron. When clearing this stage, the player is guaranteed to unlock the True Form of Express Cat, Bullet Train Cat. This is a No Continues stage.


  • 2 Znaches will appear after 3.33 seconds.
  • 4 Ginger Snaches will appear after 6.67 seconds. From this point on, nothing else will spawn until the base is damaged.
  • Upon hitting the base, Hannya spawns as the boss with a Zigge, Zir Zeal, Znache, Zroco and Ginger Snache. From this point, the enemy base will spawn a total of
    • 6 Zigges (33.3~50 seconds apart.)
    • 4 Zir Zeals (1 minute apart.)
    • 8 Ginger Snaches (30~40 seconds apart.)
    • Unlimited numbers of Zrocos and Znaches (30~40 seconds apart.)
  • The difficulty of the map is warding off Hannya and the Zir Zeals. For the latter, a hard hitting Zombie Killer like Li'l Valkyrie can make this task trivial: a level 40 Li'l Valkyrie only takes 3 hits to end the Zir Zeals. For the former task, the well-known strategy of double Island Cats and Sushi Cat does a good job of holding off Hannya. In particular, building up a wall of these cats against the Zir Zeal, killing the Zir Zeal, and allowing the future Zombies to burrow under this wall of cats allows you to consider both threats separately.
  • The map is noticeably shorter than the original stage Hannya appears in, Realm of Carnage. This characteristic exacerbates any mistakes related to the burrowing patterns of Zombies.


A functional strategy is to equip a hard-hitting Zombie Killer, double Islands and Sushi, dual Erasers, Welterweight Cat and Vaulter Cat and pretty much spam double Islands and your Zombie Killer. The walkthrough below, by SilumanTomcat, has a run of this using dual Islands, Roe Cat (with the Cost Down Talent), Can Can Cat (for Zombies), Castaway Cat and some defensive Cat Combos.

Also, if you have a tanky Uber Rare like Cat Machine Mk 3, you can use it to stall Hannya to prevent it from attacking your other units while protecting your base from the Zombies since they burrow earlier.

Or you could try to do some cheese:

Strategy 1 (ft. Pai-Pai)

Lineup: Manic Mohawk, Mohawk, Eraser, Manic Eraser, Can-Can, Manic Island, Island, Roe, Good, reliable (and preferably fast) zombie killer e.g. Li'l Valkyrie; Pai-Pai

Preferably Rich Cat to be used, and also Holy Cannon (although it's still very possible with the normal cat cannon and high level stalling)

Send out a Manic Eraser and a Can-Can to kill some Ginger Snaches. They'll both die after killing a few.

Make sure the Snaches don't destroy your base, but you can let it go down to about 30k and be fine. Send in a Manic Island if need be, but one Can-Can and double Eraser spam should be enough for defence.

When the Snaches are all gone, let Can-Can attack the base (at which point you should have about max money).

The stuff will come out of the base, and zombies will burrow. Spawn all your non-ubers, and your zombie killer so that it will be able to attack the zombies while being out of Hannya's range. When the first Zeals and Zigges die, spawn Pai-Pai for damage to Hannya. It will probably die to a Zroco, which you should try to delay for as long as possible.

Some place along the line zombies may start pushing again. Remain calm and just save up for your zombie killer to kill them. If there's ever an open field to Hannya, spawn Pai-Pai again.

When Hannya dies, make sure that you aren't killed by zombies infiltrating your back lines. Keep up a rigid defence and stay alive. It is likely your frontline will destroy the enemy base while you are defending your own.

Strategy 2 (Uberless)


Use Holy Blast cannon in place of slow beam

Only cats in row 2 shall be used, and they must be high level, ideally 30~40. Zamboney can be replaced by a good anti-zombie uber or something to damage Hannya while noone is in front of it.

It's also possible without Housewife, if you want to do it no-gacha for some reason, but she still makes thing faster by sometimes killing zombies in place of Islands, so she's worth having,.


Start with a single Manic Island (level used:40, better is recommended), then upgrade the worker to level 2 or 3; after that, start spamming Manic Island and Zamboney and never stop for the rest of the fight.

The Battle Cats Screenshot 2020.01.04 10.01.48.jpg

Once Hannya appears, the real battle starts. From now on, spam the other units based on the following: Island Cat only when you have a lot of money, Li'l Flying when a zombie wave appears and Housewife shortly after you start with Li'l Flying. You should always end up with a group of Islands keeping Hannya at bay while another army that includes the 2 zombie killers takes care of the zombies, with the eventual help of the cannon.

It shouldn't take a lot; with all those combos, your strong units will decimate the stage, despite no items or ubers being used.

Strategy 3 (Uberless, Gacha required)

Lineup: Manic Island (38), Island (20+64), Doctor, Wrestling, Fishman, Roe (28+5), Can Can (31+6), Seafarer (29+9, Maglev (36), A Bahamut (30)

Cat Cannon: Breakerblast Cannon

Battle Items:Rich Cat (required)

Manic Island, Island, Doctor, Wrestling and Fishman are a part of their combos

Battle: When starting the match wait for the Ginger Snache to come near the base and stall with Roes and anything you need to keep them at bay, but not kill them yet. Once the Znaches arrive send out both Islands. After Znaches and Gingers are dead spam Manic Island as meatshield and Roe, Can Can, and Seafarer and do not stop spamming those 4 units.

Use maglev for damage control on the Zeal and Zigges, focus the Zeal first. A Bahamut can also be used for damage control and even damage towards Hannya if timed correctly. Hopefully, you will win.


Walkthrough Video Player

The Battle Cats - River Acheron- Revenge of Carnage (Merciless)


The Battle Cats - Revenge of Carnage (Merciless)

Nurse Wuffa


Awakening Stages
Actress Awakens! Taking the Stage (Veteran)Taking the Stage (Insane)
Kung-Fu Awakens! Path of Kung-Fu (Expert)Path of Kung-Fu (Insane)
Mr. Awakens! Mr.-ious Evolution (Expert)Mr.-ious Evolution (Insane)
Bondage Awakens! Bound to Evolve (Expert)Bound to Evolve (Insane)
The Dom Awakens! Whipped into Shape (Expert)Whipped into Shape (Insane)
Box Cats Awaken! Boxing Clever (Expert)Boxing Clever (Insane)
Panties Awakens! No Frills Evolution (Expert)No Frills Evolution (Insane)
Tricycle Awakens! Hell on 3 Wheels (Expert)Hell on 3 Wheels (Insane)
Ninja Awakens! Way of the Ninja (Veteran)Way of the Ninja (Insane)
Zombie Awakens! Shambling Along (Expert)Shambling Along (Insane)
Samurai Awakens! Way of the Samurai (Veteran)Way of the Samurai (Insane)
Sumo Awakens! Oh Yokozuna! (Expert)Oh Yokozuna! (Insane)
Boogie Awakens! Boogie Up (Expert)Boogie Up (Insane)
Skirt Awakens! Skirting Danger (Veteran)Skirting Danger (Insane)
Adult Cat Awakes! Growing Up (Expert)Growing Up (Insane)
Evil Cat Awakes! Something Wicked (Expert)Something Wicked (Insane)
Doll Cat Awake! Dolled Up (Expert)Dolled Up (Insane)
Maiden Awakes! Order Maiden (Expert)Order Maiden (Insane)
Koi Awakens! Carp A Diem (Expert)Carp A Diem (Insane)
Bride Awakens! Bridal Blues (Expert)Bridal Blues (Insane)
Vacation Awakens! End of Holiday (Expert)End of Holiday (Insane)
Vengeance Awakes! No Need to Curse! (Expert)No Need to Curse! (Insane)
Kung-Fu X Awakens! Old Master (Expert)Old Master (Insane)
Sports Day Awakens! Sweat and Tears (Expert)Sweat and Tears (Insane)
Salaryman Awakes! Nine to Five Fever (Expert)Nine to Five Fever (Insane)
Reindeer Fish Awakens! Reindeer Road (Expert)Reindeer Road (Insane)
Maniac Stages Deathhawk (Deadly)Vulcanizer (Deadly)Unjust War (Deadly)Muscle Party (Deadly)Lots O' Lion (Deadly)Forest Beasts (Deadly)Ogre Island (Deadly)Draconian (Deadly)Resident Feline (Deadly)
Li'l Stages Tiny Meows (Deadly)Tiny Will (Deadly)Tiny Chopper (Deadly)Tiny Creeper (Deadly)Tiny Horns (Deadly)Tiny Wings (Deadly)Tiny Fins (Deadly)Tiny Tail (Deadly)Tiny Fists (Deadly)
Crimson Vengeance Wrath of R-Cyclone (Insane)Revenge of R-Cyclone (Deadly)
NEO Darkness Heaven Wrath of B-Cyclone (Insane)Revenge of B-Cyclone (Deadly)
Peerless Too Wrath of W-Cyclone (Insane)Revenge of W-Cyclone (Deadly)
Wrath of the Divine Wrath of A-Cyclone (Insane)Revenge of A-Cyclone (Deadly)
Bitter Irony Wrath of Titanium (Deadly)Revenge of Titanium (Deadly)
Dimension of Delirium Wrath of Black Hole (Deadly)Revenge of Black Hole (Deadly)
Red Sky at Night Wrath of Red Sky (Deadly)Revenge of Red Sky (Merciless)
The Dead Keep Rolling Wrath of the Unholy (Deadly)Revenge of the Unholy (Merciless)
The 3rd Dimension Revenge of the Wormhole (Merciless)Wrath of the Wormhole (Merciless)
Typhoon Nihil Creation's Gyre (Merciless)Extinction's Vortex (Merciless)
Clionel Dominant New Testament (Deadly)A Cat Screaming Love (Merciless)
River Acheron Wrath of Carnage (Deadly)Revenge of Carnage (Merciless)
Queen's Condemnation Honey Drip (Deadly)Royal Jelly Hell (Merciless)
Dead by Encore Prisoner's Progress (Deadly)March to Death (Merciless)
King Wahwah's Return Revenge of N-1 (Deadly)Wrath of the Dogelord (Merciless)
A Deeper Dream Wrath of the Dreamer (Deadly)Revenge of the Dreamer (Merciless)
Droid Awakens! ParaDroid (Expert)ParaDroid (Insane)
Kerihime Awakens! Road to Kerihime Evolution (Expert)Road to Kerihime Evolution (Insane)
Sleeping Beauty Awakens! Road to Sleeping Beauty Evolution (Expert)Road to Sleeping Beauty Evolution (Insane)
Healer Awakens! Healer Awakens (Expert)Healer Awakens (Insane)
Merc Awakens! Merc Awakens (Veteran)Merc Awakens (Insane)
Titi Awakens! Titi Awakens (Veteran)Titi Awakens (Insane)
Singer Cat Awakens! Road to Singer Evolution (Expert)Road to Singer Evolution (Insane)
Takuya & Yuki Awaken Takuya & Yuki Awaken! (Veteran)Takuya & Yuki Awaken! (Insane)
Castle & Dragon Awakens! SwordsmanHorsemen CavalryAshuraBattle BalloonDragon RiderPretty CatCyclopsGolem
Walpurgisnacht The Stagebuilding Witch (Deadly)
A Fake Mitakihara The Nutcracker Witch (Veteran)The Nutcracker Witch (Merciless)
Gudetama Cat Awakens! Road to Gudetama Cat Evolution (Veteran)Road to Gudetama Cat Evolution (Insane)
Holy War: Saber Alter Consumed by Shadow (Veteran)Consumed by Shadow (Deadly)
Prof. Wild's Challenge Willing Sacrifice (Veteran)Willing Sacrifice (Deadly)
The 10th Angel Strikes! Refusal Type (Hard)Refusal Type (Merciless)
Unit-13 Strikes! It's Not Your Fault (Veteran)We'll Meet Again (Merciless)
Devilish Illusion A Tower Piercing the Sky (Hard)A Tower Piercing the Sky (Insane)
Yamato Awakens! Inherited Ambition (Veteran)Inherited Ambition (Deadly)
Hikakin Awakens! Phoenix Dance (Easy)
Kaohsiung Rapid Transit Orange Line XiziwanYanchengpuBeautiful IslandWeiwuyingDadong
Nekondo Awakens! Nekondo Awakens! (Normal)
Flower Awakens! Bloomin' Brightly (Easy)
Cat Kart Awakens! Kartopia (Expert)Kartopia (Insane)
Catburger Awakens! Value Ordeal (Normal)
Beefcake CatDancer CatHyper Mr.Ultimate Bondage CatDark LazerHeavy Assault C.A.T.LollycatUnicycle CatFlying Ninja CatSkelecatPastry CatRiceball CatGato AmigoLoincloth CatPrisoner CatGentleman Bros.NyalladinWrestling CatMadam the SavannahKiss and KoiCall Center CatKite CatIron ClawRampage CatsRitual CatXmas Pudding CatManic Mohawk CatManic Eraser CatManic Dark CatManic Macho Legs CatManic Lion CatManic Flying CatManic Island CatManic King Dragon CatManic Jamiera CatLi'l Mohawk CatLi'l Eraser CatLi'l Dark CatLi'l Macho Legs CatLi'l Lion CatLi'l Flying CatLi'l Island CatLi'l King Dragon CatLi'l Jamiera CatSakura AndroidWedding KerihimeEternal Sleeping BeautyMega Cat EXHealer Cat CCMerc & Cat CCTiti Cat CCTakuya and Lovely YukiGudebene CatMukyakinNekondo SPCat Kart PValue Meal Cat
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