hah! got hard badge by only.... using the damage upgrade, while moving, ignore speed and rate of fire upgrade, only damage is helpful!!!!! + if this helped and yes im srs about this!!
when measuring the distance on the platforms hoping back, use measuring tape or ur hands and then calculate the jump, i used that trick and it PERFECTLY WORKS!!!! if u want to u can use a walkthru, but + if it also helped u to keep this comment alive!!!