You can't just drop in a level, as there's a fair amount of prep and limitation to it. It needs large open flat spaces to move, as it isn't designed to change heights. There's also a fair number of TIDs used, including it's intended victims. I'd include a demo level so you wouldn't have to translate my instructions to make it work.
Play wise, it's meant to be taken on by a small army. It has four different attacks: Magma Cannons, eye beams, Suicide Souls, and the belly gun.
- The Magma Cannons (top turret) fire two shots that explode into pools of magma, damaging anything that wanders into it. The pools dissipate after a time. The cannons are turreted so their attack is independant of the core.
- The eye beams fire up to eight shots from the eyes (duh), but each beam can target a different enemy in front of it.
- The Suicide Souls launch vertically from it's rear abdomen, then shoot off in the direction of a random target.
- The belly gun will shoot at anything that get's into it's range immediatly. The belly gun is also turreted, so like the cannons, it attacks on it's own.
- Not really an attack, but the impact from feet can also damage things standing nearby.
To kill it, you must destroy all six of it's legs, as well as the two turrets. The legs and turrets all have destroyed states. The damaged legs will simply drag along as the monster moves, and will reduce it's speed. When all the legs are destroyed, it can no longer move, only rotate.
[EDIT]
Here it is, such as it is. Warp to map01.
http://home.midmaine.com/~lilwhitemo/harbinger.7z
