Green’s Dictionary of Slang

issue n.

(Aus.) everything, the lot, all there is.

[Aus](con. WWI) A.G. Pretty Gloss. of Sl. [...] in the A.I.F. 1921–1924 (rev. t/s) n.p.: issue. A portion; ‘to go one’s issue’ – to be killed; to get the whole issue of a shell, to be struck bodily by a shell.
[UK]J. Curtis Gilt Kid 87: ‘Yes, sir?’ asked the barber. ‘The issue. Hair cut, shave, shampoo, friction, vibro, face massage, head massage.’.
[Aus]Baker Popular Dict. Aus. Sl. 38: Issue, all, everything, the lot.

In phrases

get one’s issue (phr.)

(Aus.) to be killed.

[Aus](con. WWI) L. Mann Flesh in Armour 77: ‘Jack Martin’s got his issue.’ [...] Charl’s eyes [...] saw a dark thing with a white blob at the end of it stretched out on the ground.
the full issue (n.) (also ...whole issue)

(Aus./UK) everything, the lot, all there is, thus used fig., death.

[Aus]Bulletin (Sydney) 17 June 14/1: An’ now ’e’s gorn— / Took th’ full issue, from a dud five-nine / That left th’ rest without a tunic torn.
[Aus](con. WWI) A.G. Pretty Gloss. of Sl. [...] in the A.I.F. 1921–1924 (rev. t/s) n.p.: issue. A portion; ‘to go one’s issue’ – to be killed; to get the whole issue of a shell, to be struck bodily by a shell.
[UK]J.B. Priestley Good Companions 525: Got up to Newcastle way and gets playin’ pontoon back of a boozer up there an’ loses the ’ole ruddy issue, stall and all.
[UK]J. Curtis Look Long Upon a Monkey 149: It’s the bloody lot for me — the whole issue.