From what I’ve read in posts here on CAF-
When Penitential Act A (Confiteor : “I confess to almighty God…”) or Penitential Act B (Have Mercy on us Lord for we have sinned against you…) are used, the Kyrie (Lord Have Mercy, Christ Have Mercy, Lord Have Mercy) is to be said/sung after.
When Penitenntial Act C (invocation like “You were sent to heal the contrite…” followed by the response “Lord, have Mercy,”) is used, the Kyrie is not required to be said/sung after, since it’s already in there.
After any of the above, the Priest prays " May almighty God have mercy on us, forgive us our sins, and bring us to everlasting life," (Absolution) and we reply “Amen.”
Are you sure the Creed was not recited?
From what I remember, a Homily is optional.
edit I love the Passion, too. As stated earlier, what is included/omitted depends on the season, Mass (time of day, what particular celebration, etc.) and the Priest.