Veteran IIRC, but I killed 3 of the 4 chryssalids on the first turn. One of the problems with my Lightning mod is since it takes up a 2x2 space, any time it's on a 5x5 map and not on the corner, it can have half the map immediately adjacent to it. If it starts center, it gets nearly 2/3rds of the map adjacent to it. It needs 6x6 maps to have any sense of adventure.