I honestly thought catholics were in agreement with Christ Alone, which describes Jesus unique position as our Lord and Savior.
Only Jesus could enter heaven to place his blood on the altar, the blood of any unholy man who is also not God would surfice,
Hebrews 9:23-28 (King James Version)
23It was therefore necessary that the patterns of things in the heavens should be purified with these; but the heavenly things themselves with better sacrifices than these.
24For Christ is not entered into the holy places made with hands, which are the figures of the true; but into heaven itself, now to appear in the presence of God for us:
25Nor yet that he should offer himself often, as the high priest entereth into the holy place every year with blood of others;
26For then must he often have suffered since the foundation of the world: but now once in the end of the world hath he appeared to put away sin by the sacrifice of himself.
27And as it is appointed unto men once to die, but after this the judgment:
28So Christ was once offered to bear the sins of many; and unto them that look for him shall he appear the second time without sin unto salvation.
Jesus alone is the mediator of the covenant, note the unique meaning of mediator here,
1 Timothy 2:5-7 (King James Version)
5For there is one God, and one mediator between God and men, the man Christ Jesus;
6Who gave himself a ransom for all, to be testified in due time.
7Whereunto I am ordained a preacher, and an apostle, (I speak the truth in Christ, and lie not a teacher of the Gentiles in faith and verity.
Peter himself declares that there is no other name by which a man can be saved other than the name Jesus. (Acts 4:11)
Jesus is our only high priest,
Hebrews 9:11-15 (King James Version)
11But Christ being come an high priest of good things to come, by a greater and more perfect tabernacle, not made with hands, that is to say, not of this building;
12Neither by the blood of goats and calves, but by his own blood he entered in once into the holy place, having obtained eternal redemption for us.
13For if the blood of bulls and of goats, and the ashes of an heifer sprinkling the unclean, sanctifieth to the purifying of the flesh:
14How much more shall the blood of Christ, who through the eternal Spirit offered himself without spot to God, purge your conscience from dead works to serve the living God?
15And for this cause he is the mediator of the new testament, that by means of death, for the redemption of the transgressions that were under the first testament, they which are called might receive the promise of eternal inheritance.
So, what part of “Christ Alone” do catholics disagree with?
"Baptism. – Canon 5 (p. 94): If anyone says that Baptism is not arbitrary – that is, not necessary to obtain salvation – let him be anathema.
This is a very popular Roman Catholic book, many editions having been published, fully approved by the Church, and especially recommended by the cardinals Wiseman and Manning. Quotations are from the sixth edition, Spanish, Paris,
"She (Mary) is . . . the only hope of sinners (p. 69). In Judea, in olden times, there were cities of refuge, in which the criminals who there sought refuge were exempted from the punishment they merited. These cities are not now so numerous: there is only one, and this is Mary (p. 407).
"No one can be so suitable as Mary to detain with her hand the sword of Divine justice, preventing it from striking sinners. Before Mary came to the world, God lamented that there was no one to detain Him in the punishment of sinners; but the Virgin having been born, she appeases Him (p. 72).
"We will be heard and saved sooner by going to Mary, and invoking her holy name, than that of Jesus our Savior. We will find salvation sooner going to the mother than going to the Son (p. 82).
"Many things asked of God and not received are asked and received from Mary (p. 82). All obey the precepts of Mary, even God (p. 115).
"The salvation of all consists in being favored and protected by Mary. He whom the most holy Virgin protects is saved; he whom she does not protect is lost (p. 107).
"Whatever Mary says, the Son does (p. 118). Mary is called the door of heaven, because no one can enter that happy mansion who does not enter by Mary, who is the door (p. 99), Jesus Christ said: …No one comes to me, unless my Mother first draws him by her prayers (p. 105). Having with God, O Mary, the authority of a mother, secure the pardon of the most obstinate sinners (p. 119).
"He who does not serve the Virgin will die in sin; he who does not go to thee, Lady, will not get to heaven (p. 148).
“Mary says: He that comes to me, and hears what I tell him, will not be lost (p. 149).”