Broadly speaking, Depths of Peril is an action RPG with strong strategy elements. It has all of the things you would expect from an action RPG like fast action, tons of monsters, exploring a world, developing a character, and gathering lots of loot. The thing that makes it stand out is the strategy backend. You lead a faction (called a covenant in the game) that is fighting for dominance over all of the other factions in the city. Defeating the other covenants takes diplomacy, trade, and eventually wars and raids.