Firstrun powers onboarding checklists inside other products. 200 embeds later, what separates the checklists people finish from decoration:
Four steps maximum visible. Everything else hides behind "advanced". The fifth visible step murders completion (41% to 19% in our data).
First step completable in under 60 seconds. Import-something counts if it is one click. Invite-your-team as step one kills.
Celebrate step 3, not step done. Mid-point celebration ("your data is safe") beats confetti at the end. The end celebrates itself.
Skip buttons everywhere. Forced marches convert worse than guided wandering. Every skip is data about what users value.