3-1 EARTH
3-1 Earth is the 1st stage of Cosmos Ch.3 — Even Stars Burn Out. Next stage: 3-2 Mars.
Kid Tappa carries a Barrier (up to 15,000 HP) — your hits are absorbed until it's broken.
LI'L GROSS CAT B 30% Barrier Breaker. Also fits “Counter Alien.” 
SPACE CAT A 50% Barrier Breaker. Also fits “Out-range Mesocosmocyclone.” 
FENCER CAT A Guaranteed 100% Barrier Breaker at long range — the reliable accessible breaker. Also fits “Out-range Mesocosmocyclone.” 
MIZLI S 100% chance to break Alien Barriers. Also fits “Counter Alien.” 
LUMINA S 100% Barrier Breaker opens Star Alien Barriers for the team. Also fits “Counter Alien.” 
SKIRT CAT B 30% Barrier Breaker. Also fits “Out-range Mesocosmocyclone.” Mesocosmocyclone is Alien. Anti-Alien units take less damage and deal more.
GROSS CAT A Its True Form is Strong Against Alien, giving budget anti-Alien value. Also fits “Out-range Mesocosmocyclone.” LI'L GROSS CAT B True Form has a 30% Knockback vs Alien. Also fits “Break the Barrier.” 
BAKERY CAT A Curses Alien enemies. Also fits “Out-range Mesocosmocyclone.” 
LITTLE LEAGUER CAT S Resistant vs Alien and Long Distance — a budget anti-Alien backliner. Also fits “Break the Barrier.” MIZLI S KB, Slow, Resistant and Barrier break all vs Alien. Also fits “Break the Barrier.” Mesocosmocyclone reaches 50 range. Units that out-range it can chip safely without taking hits.
GROSS CAT A Range 350 — fires from beyond its 50. Also fits “Counter Alien.” LI'L GROSS CAT B Range 300 — fires from beyond its 50. Also fits “Break the Barrier.” 
PSYCHOCAT A Range 365 — fires from beyond its 50. Also fits “Counter Alien.” 
CAT TOASTER A Range 330 — fires from beyond its 50. Also fits “Break the Barrier.” MIZLI S Range 450 — fires from beyond its 50. Also fits “Break the Barrier.” Mesocosmocyclone debuts as the boss. Mesocosmocyclone hits at 5-frame attack rate (extreme DPS) and Warps FORWARD. Crowd-control with Seafarer Cat or Corrupted Psychocat; ELEMENTAL PIXIES Ubers are ideal.
The Mesocosmocyclone debut. 44k HP, 666 damage at a 5-frame attack interval (extreme DPS), 100% Warp FORWARD by 150 range. The forward-warp is the headline mechanic — community describes it as 'the stage that taught us Awakened Bahamut isn't always the answer.' Your rusher ends up next to your own base. Counter: crowd-control with Seafarer Cat, Corrupted Psychocat, or Iron Wall Cannon to pin him outside his 50-range melee. Anti-Alien wave attackers (Ramen Cat, Catornado) finish his low HP once pinned. Kid Tappa peon becomes a stepping stone for Crimson Mina / Polevaulter Cat once his Barrier breaks. Common failure: opening with Bahamut on cooldown and getting warp-yanked into your own Cat Cannon zone.
The castle you destroy to clear the stage.