I saw the VOD, you did write a comment but forgot to post it.
Well, it was not intended to kill every soldier since the level cap is 10 and I gave David an exp increase item at the start of the game. I just have a bad habit of creating a hard game. Even a max out party would still have problem fighting the bosses if the player doesn't use the skills effectively. Looking back, I should have make Lucius less overpowered (I love healer/support class).
Anyway, thank you for playing! Glad you enjoy it.