it's impossible to beat 3 demon thingeys in the lab, like, you have no proper healing, even with sugar rush the damage is still bigger that Clara's vaccine, and i have no fire, so i can kill them fast enough
To be honest its pure luck to beat them, or it was with me
Yeah I think it's kinda based on luck too, that or try to get as much levels and or get better gear as soon as you can.