[prerequisite tagging defining a joking, and jovial attitude in posting]
you must believe in a literal hell, or you are going there. hehehheheee
[/prerequisite tagging defining a joking, and jovial attitude in posting]
really, though, a Christian (as opposed to a "Christian" - someone who professes Christianity, but doens't follow the basic tenants therein) is someone who follows the teaching of Christianity; Essentially a monotheistic, Trinitarian (specifically the divinity/Deity of Jesus, and that He is all God and all man). the foundation from a historical Jesus of Nazareth, some 2000 or so years ago in Israel. Further that this Jesus fulfilled OT prophecies, and performed miracles (not just tricks). Further that He was crucified, then died, descended to hell, then was resurrected (not resuscitated), and ascended to the kingdom of heaven.
Christianity is so easy a person of a handful of years old and an understanding of the difference in right and wrong (accountability) can accept and acknowledge who Jesus is, receive the atoning sacrifice, to repent of sin, and to try and live according to what the New Testament teaches. and is also so deep that the disciple of Jesus could study His word for a lifetime and never reach all that is available.
The term Christian is actually of negative connotation, and is probably better translated not as little Christs, or Christlike - but more akin to something like those wretched little christs.
Jesus is God in the flesh (in heaven and is still hypostatic union of all God and all man)
Jesus rose from the dead, physically (and atoned for our sin)
Salvation is by grace alone
Salvation through Jesus alone
Virgin Birth of Jesus
I guess, I could go on with some tertiary, "essentials" (including belief in eternal separation from God for those not accepting the Gospel as presented to them - judged for what they know).
I would say that the primary essentials, at a very minimum would be:
Monotheism (with an overarching understanding of salvation by grace)
Deity of Jesus (hypostatic union/communication idiomatum)
Resurrection of Jesus (atonement, fulfillment, etc)