The idea may be really nice but I couldn't find any other scenery than grass, the barricades are useless because we run faster than the enemies so we just have to shoot them running if not the basic gameplay and already implemented personally I would like to see this gameplay with a more complete map and that we make the barricade necessary for our survival ^^
Ps: it could be interesting not to have infinite ammunition and barricades and that the barricade be oriented according to the player.