Um, no
I managed to do it as a mage on impossible, where rage income is seriously reduced, so larger numbers don't help the rage usage that much, because you need to afford it first. I do admit that for a long time I though that I won't be abale to do it at all. However, I finished the game with 27069 rage used, so I guess my worries were for naught
I could complain about other medals though. 400 uses of stone skin in less than 300 battles? 450 uses of healing/bless, etc in less than 300 battles? 400+ uses of battle cry and other such spells in less than 300 battles? Now that looks a bit more, but it is manageable.
That's the deal with the medals. You do need to put some work into it to get the last level.