We have added Japanese version in patch #2 and Survival Mode in Patch #3!
About the Survival Mode:
Play through Level 6 in Story Mode to unlock Survival Mode.
Players will encounter endless waves of enemies. Challenge yourself and see how many waves you can survive!
The enemy combinations and the Boss orders are completely random. There are new elite minions in this mode as well. Players' ability to adapt can be fully tested.
New items are available. The items that can be purchased are randomly generated. Players need to choose the suitable items to survive longer!
More patch detail: https://steamcommunity.com/app/878350/allnews/
Hope you enjoy it!