Depending on the walls, generally at least in my country walls are made of clay bricks, so any hammer drill will work, but if you want to drill too close to the ceiling, or the ceiling you will need something better.
I ended up buying a rotary hammer because of this, holes on the floor (doorstoppers), ceiling, or walls right close to the ceiling was impossible with the cheap hammer drill, along with a good SDS+ drill bit feels like butter now.
I ended up buying a rotary hammer because of this, holes on the floor (doorstoppers), ceiling, or walls right close to the ceiling was impossible with the cheap hammer drill, along with a good SDS+ drill bit feels like butter now.