Overview
I couldn’t find this info online so here’s what I found out by playing:A MAX Hit is a combo that chains up over 32 explosions. Any number of chained explosions above 32 will say MAX Hit and you’ll get the achievement.* Note that you might have to do it more than once because, at least for me, the game didn’t detect it the first time.
How to do it?
The only way to get a long enough explosive chain is when the rival sends you tons of projectiles (usually when the rival is under Fever status). If you manage to hit a “golem” that creates an explosion chain on your side of the screen right when the opponent starts sending you a large wave of projectiles AND the explosions are happening right in the path of the projectiles headed to your direction you might rack up a MAX Hit combo.
This is extremely situational so it might take you days or weeks to pull off.
It’s best to attempt while honing your skills for the 1,000,000 score achievement.
A MAX Hit combo will add at least 50K to your score as it is happening AND the real combo number x 1K at the end of the stage (e.g. Max Hit: 36 x 1000 = 36,000 bonus pts.) – You get an extra life every 500,000 pts, and you get 100,000 additional score per every life left at the end of the game.
It’s more likely to get a MAX Hit combo on the latter stages, as Mevious and Memory send a lot more projectiles to your direction than the characters before them.