Fight Against the Five Scum? the System Asks Me to Fight a Slime?

I stayed up late and died suddenly, waking up as a skeleton. The system prompts: "Welcome to the lowest level creature in the world of the undead - fighting against the five scum skeleton soldiers!" Looking at my skeleton that fell apart at the slightest touch, I fell into deep thought. The novice gift package turned out to be a rusty bone knife. Just when I was doubting Tongsheng, the system released the first task: "Please host challenge the slime to prove your passionate soul!" Looking at the jelly-like creature in front of me, I silently raised the bone knife. "Even if it's a skeleton, it still has a backbone!"