note that the bazooka does do something, it creates a small splash radius and kicks Opel Blitz (truck) butt. Also good on Tanks and jeep and sometimes bikes.
i find railgun + slow time + Energy Homers good against the second boss (mother cube). start with energy homers, use slow time when mothercube goes uber fast and follow up with sonic speedy railgun, dodge remainder of spaz attack by moving away, use railgun and energy to take down spawnlets. first part of mother cube attacks is when its most vulnerable
harder than SCGMD2 cause there is a fourth hold key, there are four bars that keys appear on instead of two, and every song except for the first two is jam-packed with notes. though the first two are almost jam-packed. for those crazy people who manage to do this, congrats. i won't be doing that soon... do u guys hyperactive reflexes or something?!?!?