Freeze - Screen 4, 5, 6

Screen 4 - Long Icicle Screen

Switch to buster and begin charging. Slide right until you reach the spike gap.

Jump the first set of spikes.

Wait for the next icicle dropper to be in position, then either jump across the icicle as intended, or try to d-boost off it sooner. Phanto's suggestion is hop 3 times as a timing mechanism, then jump into the icicle.

Invincibility time is short, so move fast on the spikes

Continue sliding to the right jumping when needed. Finally release your full charge into the next Icicle dropper, then jump across that pit.

Wait for the Shield Attacker to fly overhead, then hop up the ledge and continue sliding right. D-Boost through the next Shield Attacker, then slide to the end.

Hundo - Rush Power Adapter Board

There is a ladder up at the end of this screen. Hundo must coil up to acquire the circuit board.

Screens 5 and 6

Screen 5 is an empty checkpoint screen. Slide through it.

Screen 6 is mostly the same, but has a Sniper Joe. You can either slide and damage boost through it, wait for it to jump and slide under it, or wait for it to become vulnerable and attack with T-strike.