Wrath of Red Sky is the 2nd stage of Red Sky at Morning. Previous stage: Oncoming Storm. Next stage: Revenge of Red Sky.
Oncoming Storm with a Super Rare-only restriction — Sadako still breaks the stage once the Cyclone is weakened, and tanky or fast units break into the blindspot.
- Crazed Titan or Roe Cat for bulk, Fishman, Maglev or Crazed Cow for speed: all reach the blindspot and finish the weakened Cyclone quickly.
- Trolly Bloggers need clearing — the default Cat Cannon or Crazed Cow / Manic Lion remove them fast; Cyberpunk Cat helps and chips the Cyclone too.
- Sniper the Deadeye can stall, but only with the Cyclone weakened and a Sadako on the field, or its knockback pushes the Cyclone into attacking range.
- Unit Speed Up or Unit Defense Up combos raise the odds of units making it inside; Manic Jamiera at level 25+ with Octopus or Sadako is the wiki's best route.
The Perfect Cyclone has an enormous standing range of 650 but a blind spot of 250 range. However, despite the very obvious weakness, it is almost impossible to get close enough because of its insanely fast attack rate compared to other Long Distance Enemies, greatly increasing its DPS even with low attack power for a Cyclone.
OCTOPUS CAT A As with Oncoming Storm, Octopus Cat (as Sadako rather than Octopus due to faster attack rate) can utterly break this stage, provided the Cyclone is weakened by it. 
CRAZED TITAN CAT B Tanky attackers such as Crazed Titan Cat or Roe Cat, or quick units such as Fishman Cat, Maglev Cat or Crazed Cow Cat can break into the blind spot and destroy it quickly. 
CRAZED COW CAT S Tanky attackers such as Crazed Titan Cat or Roe Cat, or quick units such as Fishman Cat, Maglev Cat or Crazed Cow Cat can break into the blind spot and destroy it quickly. 
FISHMAN CAT A Tanky attackers such as Crazed Titan Cat or Roe Cat, or quick units such as Fishman Cat, Maglev Cat or Crazed Cow Cat can break into the blind spot and destroy it quickly. 
MAGLEV CAT A Tanky attackers such as Crazed Titan Cat or Roe Cat, or quick units such as Fishman Cat, Maglev Cat or Crazed Cow Cat can break into the blind spot and destroy it quickly. 
ROE CAT A Tanky attackers such as Crazed Titan Cat or Roe Cat, or quick units such as Fishman Cat, Maglev Cat or Crazed Cow Cat can break into the blind spot and destroy it quickly. 
CYBERPUNK CAT A Cyberpunk Cat can help with this along with slowly chipping away at The Perfect Cyclone's health. ⚙ More counters worked out from the roster, lower confidence than the picks above; kept for reference
The Perfect Cyclone is Floating. Anti-Floating units take less damage and deal more.
SABER THE CAT C Saber Alter Cat: Strong against Floating enemies (Deals 1.5x damage, only takes 1/2 damage) 
ARCHER CAT A Deals Massive Damage to Floating enemies. 
BODHISATTVA CAT A Slows and (True) Weakens Floating enemies. 
CATMAN S Massive Damage vs Floating (Normal). 
HIGH LORD BABEL S Equally tough against Floating enemies, with Colossus Slayer. The Perfect Cyclone reaches 650 range. Units that out-range it can chip safely without taking hits.
The Perfect Cyclone has a deep HP pool (750,000+ even before stage magnification). Heavy single-target burst shortens the fight.
BAHAMUT CAT S Huge multi-hit burst — a story-unlock powerhouse that deletes tanky enemies. 
TECOLUGA S A 7,300-AP long-range hit obliterates tanky targets when the Critical connects. Also fits “Out-range The Perfect Cyclone.” 
GAIA THE CREATOR S Long-Distance multi-hit with Insane Damage — a generalist wall-cracker. 
CRAZED MONEKO A Big crit burst against tanky/Metal targets. 
CHILD OF DESTINY PHONO S Big Multi-Hit Massive-Damage bursts from safety. 
The castle you destroy to clear the stage.