There were many rocks bouncing off the bottom of the armour, some got through. The Evoker is either crippled for life, or, more likely, dead. You accomplished your goal of taking her out.

You did however place your character in the single most dangerous position anywhere in the current limits of the RP, and shouted out 'Bring it on!' in both the IC and the OOC. There are consequences to that. They need not be death, but fighting will most likely result in death.

There is a reason why the Kalesian army is winning here, and it is not because they are invulnerable. They siezed all the strategic advantages. When the Othean army (the actual army, not the defenders of Amaryth) gets its act together and challenges them on the field of battle, things will be quite different, but here, nothing short of Kheris hopped up on all those souls hes been eating for a great many decades is gonig to stop them entirely.