If you use power mines on the second floor boss when the random bugs the boss throws everywhere (not the line attack thing) collide with the power mines they don't explode but get pushed back. i don't know if it's a feature but the power mines glitch when being pushed back so i assume it isn't
(also side note for the first boss is there a certain way his eye laser attack goes? he aims it directly at you and i don't think there's a warning to which way it goes so i always get hit because my reaction time sucks)