Safe and Not Sorry is the first stage in Stairway to Darkness, sub-chapter 21.
This is the first level that Pigeon de Sable will appear in. When the level begins, only Snache and Pigeon de Sable will appear. Upon damaging the base, R. Ost, Mooth, and a large group of Pigeon de Sable will spawn.
CAT CPU IS NECESSARY
Crazed Gross Cat is pretty effective against the Pigeon de Sable; when the boss appears, the Pigeon de Sable must be defeated before it accumulated and using long-range character (Bahamut Cat and Ururun Wolf) to damage R. Ost and the Mooths behind it.
Cat Line Up:
Crazed Wall Cat (20), Gold Macho Cat (25), Mohawk Cat (33), Octopus Cat (30), Eva Unit-08 & Cat (19)
Use Crazed Wall and Octopus to stall the Pigeons and max out the Wallet. Do not use more than one Octopus.
Once the money is almost maxed, spam everything. The major threat is R. Ost, but Eva Unit-08 helped a lot by killing / knocking back the Mooths. I was thinking that Octopus can help me win the stage, but it can be killed by the R. Ost easily. Indeed, at my level, the R. Ost (1 Star) almost pushed to my base but I finally killed it before it did. A Sniper Cat may be helpful, though I didn't use one.
Strategy 3 (4 stars)
Power ups: cat CPU and sniper the cat
Catcombos: weaken combo and attack combo (i used firewatch and sister act)
Cat lineup:cat combos, samba cat (level 27), catburger (level 23), jiangshi cat (level 26+9), Paris cat (level 40+11) and magica cat (level 26+4)
Turn off cat cpu and sniper the cat, stall with one paris cat at a time while leveling up your wallet until you reach max money, then turn on cat cpu and, once you hit the base, turn on sinper the cat.
Sit back and relax.
Cat Line up: Crazed Cat (5), Mohawk cat (20+23), Crazed wall (19), Eraser cat (20+25), Cyborg Cat (27+3),King Dragon (20+29), Crazed sexy legs (10), Bazibon (29), Awakened Bahamut (30), Ururun cat (19)
At the start of the battle send in a single crazed wall cat. Use this time to upgrade worker cat level.When the crazed wall cat dies the first pigeon should be out. When the peons get close to the base spam eraser and crazed wall cat. As soon as you have the money send out a Bazibon and then start spamming cyborg cat and all 4 meatshields. You should also send out a crazed sexy legs to help with the pigeons. When R Ost spawns take care of the pigeons then send Awakened Bahamut and ururun cat. bazibon and awakened bahamut should have died but you should have enough cash for another bazibon. When you can send in another awakened bahamut as well. Its only a matter of time until the R Ost dies after which you've pretty much won the battle. If during any process after you've sent out the first Bazibon you have extra cash spawn in King Dragon Cats.