Episode 8: Go Wild Event Three. The only achievement to give me any real heartache because there was no guide available. Timing the charging ram counter attack takes some practice, since one, "Good" hit will ruin a perfect run. The solution is to play the third event, make sure the few charging rams are hit are countered with "Perfect" hits and earn enough points to trigger, "Overdrive mode" for the last few seconds. The last attackers will all be rearing rams that can be quickly defeated in overdrive mode for the final perfect hits to earn this potentially difficult achievement.