Reborn as an Assassin's Apprentice

In my new world, life has no worth. Reborn as an apprentice under the Order of Assassins, an organization that takes on all manner of underhanded jobs, I'm prepared to do anything and everything to survive. First, I have to get through their oppressive training, where failure equals death. My assassin-to-be rivals include a tigerborn whose strength eclipses my own, an elf who is a master of essence, and a dragonborn, their kind known as the mightiest of races. Isn't all that almost unfair? Although death lurks around every corner, I swear I'll claw my way through this hell. Manipulating powerful foes and the adults around me, punishing those who stand in my way... If that makes me a monster, so be it. There is nothing and no one I won't tear down for the sake of survival. Not a shred of morality sees the light in this darkest of fantasies.