What you can achieve in time (if you keep sticking with learning C++)
* D3D Hacks (ESP, Color Chams etc..)
* Send To Server
* Class reversal
* anything you can think of, a good coder will not ask what is possible but he will test the limits of what is possible himself.
Technically What -Bl00d- Said is correct, But we have no idea what knowledge you have, On theoretical terms, yes anything is possible. But realistically it comes down to what you know, so us telling you what you can do is wrong and not a viable answer the correct approach would be to tell you that anything is if you stick to it and spend time on it, Hell you can learn to make a aimbot in 3 days if you have a good teacher and the next day maybe create god mode again, Who's to say you can't? No one but you knows your knowledge.