For the first half of the evolution, Blake had to attack hundreds of soldiers with his will and though yes Blake had at a time triumphed against death with it and even against the simulated mind of Lilith when he was being tested by Mr. Black, a key thing to note about these occurrences was that he had was always been on the defence.
Blake's unbeatable willpower only manifested to defend, the amount he could actively use capped at 700.
For this shortcoming of his, Blake had come up with the idea to use the dreadful armour of hell once more.
Taking into consideration the size and dispersion of the soldiers, Blake had thought he would have to summon the whole armour and even need to propagate its aura, but thankfully just a few seconds of exposure to it, and the entire battlefield had been knocked out, Kate included though luckily the woman was in a barrier of her own so she wouldn't fall to the working of the rune.