On s10, 1-1 expo is about the same. I'm 135 with expo at 131+ on 1-1. Ninja? Lives a long time. So, idk what issue is. Just rip thru chp 1-3 charging stuff and kill it. A lot using bone and dusa lines, so not sure what's up. It may help you out buying a dusa hire from guild mate and charging that up first couple chps along with yours.
Since expo draws from either pit or crypt, I forget, you'll see a lot of similar lines in it. If u can't always win it, best solution is what u did, reset it and forgedaboutit.