By the time you reach Sheol, blue slimes should not be a challenge on their own. However their ability to freeze you in place can be quite harmful if a more powerful monster is near, such as a crystal ice golem. They should thus be fought alone if possible to avoid being turned into a punching bag for other monsters.
A user has suggested improving this page or section as follows:
"General improvement and filling in the gaps on the table. Also, is the passive freezing attack actually implemented? I haven't actually seen it, just seen the code (could just be good luck though)"