~47.3 seconds later, another Le'Solar spawns followed by a General GreGory ~13.3 later.
3 more Le'Solars spawn in later with a 13.3 ~ 15.3-second interval. 2 more General GreGories spawn later with a 30 ~ 31.3-second interval.
This stage is a piece of cake with all of the anti-starred alien treasures because the enemies are buffed at only 200%. Le'Solar only has 20,000 hp and 2,294 damage. GreGory only has 30,000 hp and 1,034 damage.
First, save up money. Once GreGory is close, start spamming 3 of your 4 meatshields, Chill Cat, Can Can Cat and Seafarer Cat. Once GreGory is dead and the 2nd Le'Solar is close, deploy Awakened Bahamut. After he is dead, spam every cat you have, but don't drop your money below 4000¢. Stall until Awakened Bahamut has recharged. Once he has recharged, deploy him. he will take care of the level easily.
Guide video: https://youtu.be/5u9jZM48KdQ
Get all of the anti alien treasures and then spam all of your crazed cows/ manic lions (Totally works)
Strategy 3 (2-star, 3-star, 4-star)
By the time you are attempting to do Blizzard Boulevard’s stars, you should have every Treasure in Cats of the Cosmos. At this point, just spamming Chill Cat should beat the stage.