One of the thing that surprised is that despite 2-3 containing no rng whatsoever outside of the fat kid before the boss, there wasn't really a route figured out that would get you though the whole level without unnecessary death, this run attempt to figure out a good routing for it, with a quick transition to phase 2 for the mini-boss, the only optimisation I could see is a slightly faster kill for both boss (shot the first charged shot a tad too late at mini boss and wasted 2 shotgun shot or so at boss) and a better rng for the fat kid.