Critical path and critical project requirements could indeed be separate issues. This is why you need to determine Priorities (Constrain, Enhance, and Accept) as we discussed last week. Assuming that time is the constraint, what are some things we could do to shorten duration (and cost, if possible)?
We can always shorten time duration by either deploying more resources on different tasks to complete ...
Reducing Project Duration using critical path and critical project requirements: if time is a constraint, how could the duration be shortened