Strictly speaking, THE critical path of a schedule is the sequence of tasks that drive project/program completion. An incredibly helpful feature in Wrike would be the ability to see driving paths - which would be the sequence of tasks driving any given task or interim milestone.
While it's great to see the overall project critical path, most teams want to see the "critical (driving) path" to the next closest milestone, or even the driving path to all major milestones, including project finish.