Children of the Worm is absolutely the type of expansion that Back 4 Blood deserves. It is substantially better than the awful first expansion. This expansion brings a new Cleaner, four new enemies, and six new levels to play through. The levels feel like they’ve been carefully constructed to showcase both the new enemies, especially the snipers, and the hordes of Ridden. There are some minor annoyances, such as a ridiculous overabundance of bear traps strewn about. However, all in all, this is a worthy addition to Back 4 Blood. If the third and final Back 4 Blood expansion follows this formula, we’re in for a treat.