December Gauntlet (12月強襲！, 12 Tsuki Kyōshū ！, December Assault!) is a stage that only appears during December added in the Version 11.0 Update. This Gauntlet features enemies from the Jingle Cat Bell event.
The December Gauntlet contains a total of 10 No Continues stages, called Jingle Cat (来た！ Lvs.). After beating a Jingle Cat Lv, the player must wait for 30 minutes before they may enter the map again. Rewards for the first completion of a Jingle Cat can include Battle Items, one Platinum Fragment and Catamins. The rewards reset with every appearance of the event.
- December Gauntlet is unlocked after clearing Jingle Cat Bell.
List of Stages
|English Version||Japanese Version||Translation|
|Stages 1~10||Jingle Cat Lv.1~10||来た！ Lv.1~10 (Kita！Lv.1~10)||Came! Lv.1~10|
- December 1st, 2021 to December 16th, 2021