Screen 7 - Slinkies

Collect the E-Tank if desired, then drop down.

Slide to the right, and use drill on the slinkies. Switch to buster at the end and proceed.

4 jump strat / Safe strat

Simple, one jump, shot, jump then repeat. 

Faster strat

This time we try to kill the slinkies in one single jump. You need to shoot fairly early or else you will get it (most likely on the 2nd one if you are too slow or too far)

Stored Charge Mechanic

You can hold a full charged buster, switch to another weapon and once you go back to Buster get an instantaneous full charge.

Exactly like this example right here:

You can use the stored charge technique on the slinkies here. Technically the slinkies take two hits from the drill bombs, one from the contact and a second from the explosion. You can switch back to buster after the contact damage on the second slinky to save a small number of lag frames and start your slide ever so slightly earlier

You can also use it with the safe strat!