HOW DO YOU ATTACH A STAIRCASE LANDING IN A CONCRETE WALL WITHOUT USING A BEAM OR KICKER?

Thanks for invitation, and I am really sorry for my late, because I were  had a lot of work.

Possibly a rockbolts with resin wil do the trick in this case concrete quality and thickness is a factor

You have to hack open the wall to anchor the landing reinforcement into it; possibly, tie the landing reinforcement to the wall reinforcement. This way, the landing would act monolithically with the wall. 

drilling and using screws or welding is appropriate