bad terrain shader honestlyI think it uses simple multi texture shader, so the look of terrain is not the fault of the shader

Perhaps the sand is too simple and the beach neeeds lot of little stones here and here, perhaps use a more detailled and varied sand texture ?
My taste only : the plants near the beach would need some shadows or simple grass texture under them, they seem a little out of place !
The game looks a lot like this old one , good !
Well use sand texture with noise on it ?