Burst Screen 4,5 - Water

Screen 4

Quick Swap to T. Strike. 

This room is cycle based, so if you move the same every time the enemies should be in the same position. Otherwise you might need to clear out extra enemies.

Keep in mind the clear cellualar bomb things ... are exploding bombs. Keeps your distance when detonating them to avoid damage.

First Spike Pit

You can actually slide under the first bomb and jump to the next ledge without taking damage. If this is troublesome, just shoot the bomb with T. Strike before getting too close to it.

DO shoot the second bomb up top with T. Strike.

Going Under

Slide off the platform and float down to the bomb, Slide off that to the next platform.

Slide under the bomb enemy. Jump over the bomb and T-Strike the fish.

Slide under the last bomb and fall to the next screen.

Screen 5

Slide to the left and fall to screen 6. Quick swap to your desired weapon on the next screen here, Junk (safe) or Freeze (faster but harder).

The health on the right is optional.