Vicente went to the corner of the cave where the books, parchments, and scrolls were kept and quickly searched for anything that might lead him to the basilisk.
The goblins were rational enough to know how to follow a map and even make maps, even when they were only at the 1st stage. As they grew stronger, their mentality developed, something familiar to all magical creatures.
Vicente was sure the dead goblins nearby must have been able to map the region, even if they weren't the strongest of their kind. Considering how mercenary they were, belonging to a race of thieves, there was a high probability that there was something useful there.
But even if there weren't, Vicente would never regret killing the goblins. Whether he liked it or not, he couldn't communicate with creatures of that race, and of course, he wouldn't be able to find out anything by interrogating one of the goblins.