ive been bored over summer, and thought it would be fun to mod a campaign map. since i can only properly rip a very small few i started with silent cartographer. so far in this mod, ive only done minor things such as adding different vehicles, weapons and minor biped/ global changes, but i want to add more enemy AI. i do know how to add them in MP maps, but i really have no idea how to get it in right for SP. can I get a little help?
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I added a few engineers to the level, because they fit the scene of the map room, but when i go to the map room they dont appear.

I want to add some more elites, grunts and jackals.

I want to make the elites drive ghosts and wraiths (this ones a biggie :) )

I need to learn how to change weapon reticules
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if you can help me with any of these things, please post here. also, i want to replace most all of the firing sounds on my weapons, just to make this mod different. if you have any interesting custom sounds (that are realistic!) and youd like to share them, please post a DL link

~Ironcladjimmy