Choose Casual when you are learning controls, identifying pink parry cues, or seeing a boss pattern for the first time. Choose Expert when you can already explain the sequence and want to test the same plan under greater pressure. The developer describes the choice as “Casual to learn, Expert to suffer,” but does not publicly list exact health, speed, timing, reward, unlock, or save differences.
Quick difficulty decision
These recommendations use the developer’s intended learning/challenge distinction. They do not claim a specific numerical modifier.
Use Casual as an information mode
Your first goal is to see enough of the encounter to form a plan. Watch where hazards begin, which objects are pink, how they cross the arena, and where safe space remains. Use short shooting windows and stop adding damage when it makes the next cue harder to read.
After a failure, write one cause. If you moved into a hazard, adjust the route. If you recognized a pink object but missed the action, practise timing with the same position. If you were hit after a successful parry, shorten the recovery. Casual has done its job when these decisions become repeatable.
Move to Expert for a controlled test
Keep the same encounter, device, group size, and core plan when first moving to Expert. Changing equipment, players, and strategy at the same time makes the result impossible to interpret. Compare how much of the pattern you can still recognize and whether the safe route remains practical.
The mode may alter pressure in ways not documented publicly. Describe only what you observe: an attack appeared sooner, a pattern lasted longer, a mistake cost more, or a route no longer fit. Do not turn one attempt into a universal percentage or frame claim.
Compare the modes fairly
Same encounter
Compare the same boss or stage. Different fights do not isolate difficulty.
Same session format
Keep solo or the same co-op group so player count does not become another variable.
Same control setup
Do not remap or switch device during the comparison unless controls are the problem being tested.
Same practice goal
Measure recognition, survival through a sequence, or consistent parry recovery—not only clear time.
Run several attempts before drawing a conclusion. A lucky first clear or one early failure says less than a repeated pattern. Record the date because updates can alter difficulty behavior.
Difficulty and pink parries
The eligibility rule remains pink, but the practical challenge can feel different if Expert increases pressure around the cue. Separate the variables: first prove that you recognize the correct object, then test whether approach, input timing, or recovery is failing.
Do not assume Expert changes the parry window unless repeated live tests show it. An apparently tighter window may instead come from faster surrounding hazards, a worse starting position, or attention split across the screen. The parry guide gives a structured diagnosis.
Difficulty in co-op
Co-op adds communication and another moving character. Before comparing modes, establish short calls and positions on Casual. Once the group can repeat the opening, move to Expert without changing roles. Review whether the harder attempt failed because of the mode or because coordination broke down.
The official page does not publish co-op scaling or separate difficulty rewards. Verify both players’ progression and results after each clear. If a guide promises an Expert-only reward or a fixed multiplier, require current in-game evidence before spending time on it.
Can you switch difficulty later?
The public official description does not state when difficulty is selected, whether it can be changed during a run, or whether changing it affects progress or rewards. Read the current selection screen and any warning before confirming. If the live UI allows a switch, note when it takes effect and whether the encounter resets.
Do not delete a save or restart a route based on an unsupported claim. When the menu does not explain a consequence clearly, test on the smallest reversible step available and preserve your current progress.
A three-session progression plan
- Recognition session: Casual, one encounter, identify the major cues and at least one pink object.
- Consistency session: Casual again, reproduce your route and parry recovery without changing several variables.
- Pressure session: Expert with the same setup, compare which part of the established plan breaks first.
If Expert removes your ability to identify the cause of failure, return to Casual and repair that exact part. Moving back is not lost progress; it is targeted practice. Continue through the beginner route or use the solo and co-op guide before changing both difficulty and party format.
Evidence status
Casual and Expert and their learning/challenge framing are official developer statements checked October 27, 2026. Exact stat differences, timing changes, rewards, unlock conditions, switching rules, and co-op modifiers remain unverified and should be read from the current game.