BOMBED:A 3D wasteland exploration video game

After a nuclear bomb went off on an island that is not on any map, the island is considered permanently dead, to try to revive the island, someone is willing to goto the surface and find life before another bomb explodes. This game is on hold for these reasons: The game engine, UE4, is too complicated for me to use, until I know more, no development will be in progress.I am very inexperienced in modeling maps, so even if I knew what everything did in UE4, I cant model maps yet, I tried importing...