Even though Kazi was relatively powerful now, he still couldn't take on an entire army that would be suicide. In similar light, he definitely couldn't take on an entire tak, that would be even more than suicide.
The night after the attacks were carried out, the last group made their move. Instead of coming out to cause a ruckus, they utilised bombs instead. Doing so, they were able to escape without being caught, even though they were discovered at first.
Kazi who had returned to his base brought about 200 people with him, including men, children, and women, of all ages. Some were wounded, some sick, some unconscious, but one thing they all shared in common was that they were still breathing. The philosopher's stone had something to do with souls, so the sacrifices had to be alive.