Sure:
For by grace you have been saved through faith, and that not of yourselves; it is the gift of God, Ephesians 2:8
THROUGH faith, not AND faith. We were given faith as a freewill gift from God. We didn't earn it or anything else that we receive THROUGH faith. This verse (and others like it) make it clear that salvation is a freewill gift from God given through faith, but not faith ALONE.
No, not any separate set of conditions. There are no conditions, that would be earning. Baptism is the normal way of salvation due to the Fall. We are made capable of justification (and truly justified if we happen to die) at baptism. After we reach the age of reason, faith justifies us. We MUST cooperate with Grace throughout our lives or risk damnation because we CAN lose salvation through sin, but even this cooperation is Grace.
There are only two ways to receive something given. Either it is a freewill gift, or it is earned. There is no middle ground that I can see. It seems that Paul condemns the one (God being put in obligation to man), so the only way left is Grace.
Explain how you see infant baptism as a way of salvation.
JLB