Saving your game is crucial to avoid losing progress. Throughout the castle, you'll encounter Save Rooms, marked by a glowing blue orb. Simply walk into the orb to save your game. It's highly recommended to save frequently, especially before challenging boss battles or entering new, dangerous areas.
In addition to Save Rooms, you'll also find Warp Rooms, marked by a glowing red orb. These allow you to instantly travel between different Warp Rooms you've already discovered, significantly cutting down on backtracking. use these warp points to efficiently navigate the sprawling castle and return to previous areas for exploration or farming.