Hugh: your shots go where you point them--if you can't track the cubes' simple movement powers, why should your ammunition?
prod: What? Moving slower makes it easier to dodge? That doesn't make any sense! and if a maxed chain gave you 100% OD, you could just go into overdrive continuously and never take any damage. No challenge means no replay value. Also, most players won't even start getting long chains until the last chapter
Difficult is one thing, but there's only one plausible solution and I tried it twice, to no avail. To solve a puzzle, we start with what we know. Simply stated, we don't have enough information.