Staff L2:2S1E is possible. Have to hit some roaches north while getting the queens to run south, then have to face north in order to retreat south while backswiping new roaches. Then I might have got lucky with only two roaches spawned on one side which allowed me to get over to that side before being attacked from behind.
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I checked a few rooms that I though might be problematic with the pickaxe, but they all were ok.
L12: 1S is possible, if you kill the first one by turning, there's enough corners to allow you to face the rest of the ones in the corridor.
L19: 1S1W has a race at the start where the pickaxe takes an extra turn, but there enough leeway.
L17: 2N1W - I thought maybe cutting through the tar would take long enough that the north tar would clog up the passageway, but it's ok.
L23: 2W - There's a bit of clearing crumbly wall while pursued by a goblin, but it's doable.