Consists of some rooms to be opened in key sequence from a central area. Doors are narrow and each reveals a row of monsters waiting for you, and you don't have enough ammo (I had to cheat). No atmosphere, bright lighting, and mostly Wolfenstein-ish cuboid rooms. Technically OK, with minor texture mis-matches. At least his own summary was modest. Give it a miss.
cannonball is yet another mapper who will probably take some getting used to when it comes to his maps. I remember hating on Return to Hadron when I first played it, but after subsequent plays it got easier. the same can be said for a lot of his other wads.
while this is my first time playing through Sparta 2, I easily got into cannonball's playstyle. his architecture style is always the same, as are his usage of monsters, basically you'll be running around often in the heat of monsters; the space is wide enough to accomodate this kind of playstyle and you just gotta be quite wary of where projectiles are flying. even if the monster count is low the layouts make things rough. but overall, what I like most about cannonball's maps is how well they can be run through. sure, you're gonna be dealing with a fuckload of carnage in these maps, but they all are very speedrun-friendly which is a plus. notable maps include:
MAP08, which is probably the roughest start in the wad
MAP12, which has a false sense of security with its monster count.
the two slaughter finales which are both well done.