In class 2 Frozen store delivery is hard job most store workers are not insured to lift deliveries so as a driver you have to take your deliveries into stores, downstairs or upstairs which is hard because of the frozen products weights more
My old man drives a special kind of tipper known as a Bulk Blower which yes it tips but rather than it all coming out the back door, it blows out through pipes, so the job is delivering animal feed to farms down tight lanes so I'd consider that to be a difficult one, sometimes you'll have upwards of 5 pipes to use to connect to a feed bin
Stores should have staff assigned and trained to take in deliveries and loads the trailers especially when multi drop is concerned. Hgv driver already have enough on their plate with the high level on concentration when driving such large vehicles let a line having to over work themselves more imo