Isaac · Clock Tower

Go to Heart of the Clock in Clock Tower and complete the proper battle. The first encounter in Main Hall is not the post-battle reward point for this fight. When you see the jump begin, first leave the dive path, then locate the real body and afterimage after the teleport. Keep watching for follow-up attacks after every landing; counting the third one does not guarantee safety. Only move in for a brief attack when the real body visibly pauses and the afterimage paths are also clear. Short recovery windows are unsuitable for long combos or drinking potions. Even long recovery may be replaced by a subsequent attack choice; don’t stand still for a fixed number of seconds. Complete the post-battle story and absorb the reward orb to obtain Chronomantic Dive and Chauve-Souris; the same post-battle sequence also makes the weapon chest accessible.