- 2 Otta-Smack-us are spawned, the first after 10 seconds and the second one after 13 seconds and keep respawning every 98～100 seconds.
- 3 Otta-Smack-us are spawned, the first after 53.3 seconds, the second one after 55.3 seconds and the third one at 57.3 seconds and keep respawning every 98～100 seconds.
- 1 Croco is spawned after 20 and 40 seconds, stack every 30~50 seconds.
- On base hit, Master A. spawns as the boss with:
This stage features only Traitless enemies, so use generalist units.
Ranged meatshields are recommended, as they do not trigger Dolphina's attack.
Epicfest Exclusives are great here, and can effectively nullify the difficulty of this stage.
Mid ranged attackers like Cameraman and Seafarer cats work well here.
Strategy 1 (1~3 Star)
Lineup: Manic Mohawk Cat (40), Eraser Cat (60+), Manic Eraser (40), Can Can Cat (40) Manic Macho Legs Cat (40), Maglev Cat (40), Seafearer Cat (40), Manic Island Cat (40), Polevaulter Cat (40), Awakened Bahamut (30).
High levels are mandatory.
Battle Items: Rich Cat (optional)
The Otter cycle is 2 otters, then 3 otters, then 2 otters, and so on. Use this to your advantage and stall them with Can Can, Manic Island, and Seafarer. Make sure you don’t push too much because you might trigger the base and release all of the forces of hell. Once you have level 8 Worker Cat and max money in your wallet, stack up 5 otters and use your 5 attackers. Don’t spawn Maglev yet because it could trigger the base. Save it later once Dolphina comes out. After successfully stalling for a while, keep on spamming, but manage your money. The stage can be difficult with the lack of money drops from enemies. Spawn Castaway and Polevaluter only when 2 otters come, and when 3 otters come, spawn Awakened Bahamut Cat and hope that it kills the otters. Awakened Bahamut may fail its job the first few tries, but with some luck you might be able to actually kill the 3 otters. Now repeat the cycle until the Dolphinas are dead. Don’t celebrate though... The Rain D’s and Master A could finish you off, so keep your guard on. If you got past the dolphin wave, don't spawn Can Can or Seafarer because they get outranged by Rain D. If unlucky you might need to use revive and finish them with Bahamut. If super lucky, you will kill Rain D and then kill Master A with Awakened Bahamut. If you're running a little low on cash, that indicates that you’re doing something very wrong. You may be spending too much money on either Seafarer cat or Polevaluter cat. If your money goes below 4000, you might want to restart.
Strategy 2 (4-star)
Skelecat, Necromancer Cat, Mr., Moneko and Neneko are present for their combos
When the map starts, use the empty start to get level 4 Worker Cat. Lure the first two Ottas fairly close to your base, then spawn 3 or 4 sets of Ramen Cats and Cameraman Cats. This will clear the first wave and do a good percentage of damage to the second. Lure the second wave close and spawn 3 more sets of Ramen Cat and Cameraman Cat. The goal is to have LV 8 worker cat while having nothing on the field, as in having Ottas approaching your base. At this point, do not spawn Ramen Cat until all Dolphinas are defeated.
Spawn Cameraman continually for the rest of the match. Letting your wave of Cameraman Cats get a slight lead, spawn Nyandam and Ururun, then keep Cameraman Cat and Cyborg Cat on cooldown, prioritizing Cameraman Cat when funds get low. Your wave of Cameraman Cats will crash into the enemy base and start the real fun. Continue spawning Cameraman Cats and Cyborg Cats until you win, Dolphina will most likely not be able to attack through the damage-knockbacks, so don't use meatshields.
The Cameraman Cats destroy Dolphinas, but you need Cyborg Cats to handle the Rain D.s. Rain D.'s range of 300 trumps Cameraman Cat's range of 250. Cyborg Cats can hit Rain D. and therefore, Dolphina, and Rain D. similarly needs only 18,000 damage to be knocked back.
The wave of Dolphinas and Rain D.s eventually ends. Master A. will be the last enemy standing, disregarding the infinitely spawning Ottas. Use Ramen and Nyandam to slowly defeat him. The idea of not using meatshields should be considered for all stars. Once you effectively remove the Dolphinas, all you're left with is a Master A. and a few Rain D.s.