The second bullet of the Mitterrod Survival Fear Free Update is online today, adding 3 types of "BOSS Attack" modes for continuous battles with bosses.
Here's an introduction to the various new modes.
Boss Attack: Win 12 bosses in a row, aiming for the best time. Clear the level to unlock the mode.
Survival Attack: Challenge as many bosses as you want for a limited time of 5 minutes. Being able to defeat a boss can take up to 30 seconds. If defeated without injury, it can be extended by 60 seconds.
One of the other two attack modes needs to be completed to unlock.
Survival Fear Attack: The ultimate difficulty mode in which the boss can kill the protagonist with one hit. You need to beat 12 bosses in a row, aiming for the best time.
Unlock the Survival Fear Mode after completing this section.
Players can choose their favorite boss to practice battle, thus shortening the time to complete the various attack modes.