Extinction's Vortex (Merciless) is the second stage in Typhoon Nihil. When clearing this stage, you have a 100% chance to unlock the True Form of Primordial Cat: Future Cat. This is a No Continues stage.
- Infinite Squire Rels spawn after 16.67 seconds500f, delay 5~10 seconds150f~300f.
- 10 Gabriels spawn after 16.67 seconds500f, delay 5~10 seconds150f~300f.
- 5 Relic Doges spawn after 33.33 seconds1,000f, delay 5~10 seconds150f~300f.
- 3 Star Pengs spawn after 50 seconds1,500f, delay 6.67~10 seconds200f~300f.
- When the base reaches 99% HP:
The strategy in this stage is to focus the backliner enemies as much as possible before killing the Primeval Cyclone. LD units such as Medalist Cat, Golfer Cat, and Awakened Mina, along with Shockwave units like Manic Macho Legs and talented Pizza Cat can accomplish this task. Talented Rodeo Cat can easily help keep the Primeval Cyclone from destroying your LD stack. A general lineup may consist of 3 meatshields, Rodeo Cat, and 6 LD/Shockwave units. It may help to replace some of the LD/Shockwave units with long-ranged units in case the Primeval Cyclone dies before you can finish off the rest of the backliner enemies.
Angels and Starred Aliens appear as support, so if you have any remaining slots, you may add in anti-Angels and anti-Aliens if you want. Do note that this is not necessary and only add them if you have nothing else to add to your cat army.