Freeze Screens 1 and 2

Screen 1

Quick swap to T Strike, slide right. Use T-Strike on the walker enemy as you jump and slide up the stairs.

Slide into the bear to D-boost, slide through it and full jump from the far right edge into the screen transition while holding up+right.

Screen 2

If you did screen 1 right, you should grab the ladder and immediately climb up to screen 3.

Screen 3

Press R to switch to Junk Shield, but don't use it yet.

Slide into then again through the bear. Medium jump mid-air over the shield attacker and activate the junk shield, destroying the enemy. (Activating the shield mid-air also means you don't stop moving).

Keep the shield on for the rest of the screen, jumping and sliding until climbing up the next ladder. The shield should naturally destroy the second sheild attacker.