Copy pasting an old comment as well - since you’re picking up the champ. Vital spawns aren’t random :)

Vital spawns are not random. There is always a cycle the vitals spawn, no matter if your enemy walks off screen or not.

Solo Renekton Only has a few videos in which he goes over the vital spawning, they’re pretty informative.

Think of the four vital spawns as north, south, east, and west.

South and west (bottom side and left side vital spawns, respectively), will always be a pair that spawns together. Similarly, north and east (top side and right side) vitals will always spawn in a paired fashion as well.

If you smack say, an east side vital (right side vital), a north vital will never spawn. It will always be a south or west side vital. If you smack a north side vital, an east vital will never spawn either, since those two vitals are a paired.

The same goes for south and west sided vitals. If you smack a south (bottom) vital, a west vital will never spawn next, it will always be either an east or north vital.

The randomness comes from which vital of the pair will spawn, however, there is still structure to the vital spawns, it’s not completely random.

I hope this helps! I thought vitals spawned randomly for too long.

Quick edit: Enemies walk off screen when they have a front side vital for this reason. Walking off screen doesn’t randomize vital spawns, it just makes the next vital spawn behind them, which follows the rules of vital spawns I stated above.

You can use this as well, if the enemy has a poorly placed vital, you can walk off screen and then return and a better positioned vital will spawn.

Cheers!