Go to the moon without any time warp. No cheats, but go kerbal on boosters if you so desire. There are no restrictions in terms of how your rocket is built.
Hardcore mode: come back from the moon.
Legendary mode: To mars and back without time warp.
(If you, for some reason, want to do the mars mission, you may time warp to your burn window.)
Omnipotent mode: come back from mars
Hardcore mode: come back from the moon.
Legendary mode: To mars and back without time warp.
(If you, for some reason, want to do the mars mission, you may time warp to your burn window.)
Omnipotent mode: come back from mars