Here is the Oath chart with ias calculator:

Emboldened by easy monsters along the way...the bulls with horns are a favorite meal for bears...the tainted monster, yummy.
The other monsters were not so bad, the carvers with their ressurrectors and those frozen horrors:

Had to use tp to escape this one. And...

That was like try number 6 or 7. Only one amp too. One of the many tries just wiped out the party very fast. Even gave up and distributed pots. No real help. When merc dies,
it's time to start again. In this final try, rejuvs were all gone. Didn't see any bad auras like might or fanat. BoBo wants a cta.