Heavenly Tower/Floor 25

Battleground

• Up to 10 Pigeon appears one at a time, stack every 36.7 seconds^1100f.
• After 2 seconds, 1 Elizabeth the LVIth appears.
• After 25.3 seconds^760f, 3 Gory Black appear, stack every 6~6.7 seconds^180~200f.
• After 50 seconds, 1 Kory will appear out of 3, stack every 60~66.7 seconds^1800~2000f.
• After 83.3 seconds^2500f, 3 Otta-smack-u appear, stack every 16~18 seconds.
• After 120 seconds, 1 Berserkory appears.
• After 133.3 seconds^4000f, Heavy Assault C.A.T. appear as the last boss.
• After 143.3 seconds^4300f, 12 Mr. Angel appear, stack every 2.6~5.3 seconds^80~160f.
• After 166.7 seconds^5000f, 1 Otta-smack-u is spawned every 19.3~22 seconds^580~660f.

Strategies

Uber-less Line Ups

• Eye of the Storm, Island, Manic Island, Jamiera, Manic Jamiera and Awakened Bahamut.

Demonstrated video: [1]

• Crazy Hearts, Macho Legs, Island, Manic Island, Maglev and Awakened Bahamut.

Demonstrated video: [2] (boss skip)

Uber Carrying Line Ups

• Eye of the Storm, Awakened Bahamut, Cat Machine Mk3, Balrog Cat, Manic Island and Manic Jamiera. (boss skip)

Somewhere in Between

• Damage up combos, Dual Erasers, Octopus Cat, Awakened Bahamut, any unit good against aliens (Cats in the Cradle in my case). If performed quickly enough, the boss can be skipped, along with the otters, Berserkory, and Mr. Angels. Immortal Yukimura can also help against Gory Blacks.

Reference

• http://battlecats-db.com/stage/s7000.html