I only could play a few games, but an all-DA game is pretty wild. Normal strategies don't quite work. You have to really keep an eye out for tactics. We fell into some traps. I bought Rats in two games, but I saw the corner I was getting into so I didn't play them too much. They basically were dead cards for me. They would go great with Death Cart, though.
Cool expansion. Technically no new rules, but the cards are way different.