RCs are always going it is not faith alone but faith plus. They seem to be confused on what the plus is, but it is not works. So let us clarify what the plus truly is, is it:
I assume this is regarding what is needed to enter heaven and receive eternal life - that is, to be saved on the day of God's judgment and wrath.
It's faith plus the grace that causes rebirth, including the love that the Spirit pours into your heart, so that you might love:
The dogma from Trent:
CANON XI.-If any one says, that men are justified, either by the sole imputation of the justice of Christ, or by the sole remission of sins,
to the exclusion of the grace and the charity which is poured forth in their hearts by the Holy Ghost, and is inherent in them; or even that the grace, whereby we are justified, is only the favor of God; let him be anathema.
1. Obeying the commandments
If you allow the Spirit to guide you, the love that the Spirit provides will make you obey the commandments. There is no law against the things that love has you do. Love is the fulfillment of the law (Romans).
2. Obeying the pope and his buddies
3. Making the RCC sacraments, if so is one sacrament more important than another
4. Reading the catechism
5. Reading the scriptures
6. Saying the rosary
7. Wearing scapulars
All these are important insofar as they help you to do what ultimately counts - that you let the Spirit/love be your guide.
8. Good works and what do they consider good works.
You know a tree by its fruit.
You are given the Spirit through faith, and this is justification.
The Spirit then empowers you to have, for instance, the love you need to do good deeds.
Those good deeds
are then the fruit that are looked at on the final day - when God looks at every human being's works without favoritism.
The good deeds come from having Christ's life in us.
So note the difference between being justified when you are baptized into Christ's death and then after arising in rebirth the being saved from wrath at the end of a life of living by Christ's life:
Romans 5:
9 Since we have now been justified by his blood,
how much more shall we be saved from God’s wrath through him! 10 For if, while we were God’s enemies,
we were reconciled to him through the death of his Son, how much more, having been reconciled,
shall we be saved through his life!
Romans 10:
9 If you declare with your mouth, “Jesus is Lord,” and believe in your heart that God raised him from the dead, you will be saved. 10 For it is with your heart that
you believe and are justified, and it is with your mouth that
you profess your faith and are saved.
Is faith necessary for salvation? or is it the plus? They these works their own?
Faith is necessary.
The plus would be: the obedience of faith, the following in the footsteps of Abraham's faith.
Romans 1:5
Through him we received grace and apostleship to call all the Gentiles to the obedience that comes from faith for his name’s sake.
Romans 4:12
And he is then also the father of the circumcised who not only are circumcised but who also follow in the footsteps of the faith that our father Abraham had before he was circumcised.
That said, ultimately, Catholic teaching is that if there are no physical deeds to prove that you are a good tree, God will always be able to judge correctly whether you are a good tree or not. The ultimate requirement is that you die "in a state of sanctifying grace," which means that you die with God's life in you. If you are alive in Christ, with the Spirit in you, and are "in" the Spirit so that you have a loving heart, you will be considered righteous, a child of God, circumcised of heart, and co-heir to the inheritance of eternal life.
Once in heaven, your faith and hope fall away as unnecessary, but love remains. Love is ultimately what allows you to even behold God, because God is love, and if you don't know love, then you cannot "see" Him. Blessed are the pure in heart, for they will see God. This is why of the three things that make a Christian (faith, hope and love), love is the greatest. It is God's life itself. It's what we are given in our justification, what we are to hold onto through our lives (as exercised in service to Christ), and what will allow us to see God and enter heaven so as to remain in it.