Total Depravity means that man had been degraded morally, man will never search for God because they blinded by sins (Romans 3:11).
Unconditional Election means that each man is sinful, they are saved by grace only. None of our act will influence God’s election.
Limited atonement means that Christ atonement limited for those who have been selected before the world created (Predestination).
Irresistible Grace means that God’s grace makes them receive God and nobody could impede it.
Perseverance of the Saints means that God’s chosen person will always be saved no matter the condition is.