Question: how to unlock all ssbu characters quickly?
Answer: Step 1: Create & Play A Custom Match In Smash Mode. ...  Step 2: Self-Destruct & End Game Start New Challenger Sequence. ...  Step 3: Defeat The Approaching Challenger. ...  Step 4: Defeat Challenger To Add Them To Your Roster. ...  Step 5: Restart Game To Bypass 10 Min Cooldown.