Folks,
This is my initial thoughts regarding how to invoke some 'level' stuff to the old Boot Hill arcade game circa 1977 - yep - they had arcade games back then!
So, this is my initial thoughts about spicing up some level stuff. TBH, didn't think I'd get it this far - but I have, so i need to invest some more effort.
So, here it is - my first 10 potential levels, associated with the passage of time (On the off chance anyone ever play it for 10 mins.....)

Still need to work on the AI - which should be intriguing to say the least.
;1st 60 seconds
;AUTO_RELOAD, after six bullets......... more akin to the original - was going to make it an
(Que Arnie voice) Uzi 9 mm affair...........
;shoot straight
;2nd 60 seconds
;shoot up and straight
;3
;shoot up 30, straight and down 30
;4
;as 3 - but introduce a monster 3rd bullet at the bottom - will shoot +2 degrees, 0 degrees, and -2 degrees on the 7th bullet
;5
;as 4 - but faster
;6
; as 5 but faster
;7
; remove 7th bullet mode................
; introduce +60 degrees - slow back down to level 3 speed, delete the shrapnel mode
;8
; introduce -60 degrees
;9
; speed up to lvl 5 bullet speed
;10
; introduce - the 7th bullet mode again - removing +60 degrees and -60 degrees
;11 - Dunno yet.