Alexander's efforts were commendable for innovation. Whatever he wanted to do with the slime core, at least he was attempting to isolate it from the rest of the slime's body. However, the method was not perfect. It was such that, when he pushed his sword into the slime to try and flick its core out, the core did in fact move, but not in the way Alexander had intended. Manipulating its body to the best of its ability, it propelled its core to motion.

As Alexander's sword stopped just a sliver away from the core, the core flowed upwards through the slime, flowed onto the flat edge of his blade. And the slime followed. 

While complex maneuvering and body control was impossible, the slime's ability to propel itself in a straight line was admirable. It had to be, to achieve their feat of jumping at enemies. That speed was being used at this moment in time, as the core and a more than considerable mass of green slime shot up Alexander's blade, coating it as it traveled along the blade's edge, towards the hilt.

Meanwhile, with Vincent...

Oh, Vincent.

Vincent naturally managed to make it to the vials. However, as the slime-coated floor was still very much a thing around the vials, even with most of the slimes dead, stepping close enough to grab them did mean that the bottoms of his shoes got a decent amount of slime on them in the process.

The trouble started when he picked the vials up, though. Because, when he would lean over to pick the vials up, he would discover something hiding beneath and between the vials in the carpet of gelatinous mass. A small black sphere. 

Oh.

As such, when his hand went to pick up the vials, the final slime of the floor acted appropriately. In a matter similar to its brother who was locked in mortal combat with Alexander, the Slime flowed entirely off the vials and onto Vincent's gloved hand, before quickly moving to crawl along his arm in an attempt to reach his face, while a small amount of slime stayed on his hand and tried to slip in under his glove. A distraction, maybe?

One adventurer with slime crawling up his weapon, one with slime crawling up his arm. 

Don't mess this up.