Someone please can help me

i need the player of the doom marine,take a look to my description (i will use the Zant format for the simplicity):
Name: Doom-Marine
Type : Player
What it replaces : Link-1(the first Link that have 1 hp)
Description :i need a character that is the marine of the game Doom,I think that is best to create it replacing link-1
and when it attack with the sword it will instead shot with the rifle...
Someone can help me?I need it,
I tried to create it alone,
but i create a real sh*t

Reference Sprites :
