Ben 10 Omniverse

Early on in the level 'Past Due,' just after a room filled with railroad tracks (which also contains a Codon Crystal off to the left), you'll enter a hallway. In the corner of this hallway sit 8 crates.

Just switch to HeatBlast (the fire guy), jump, and press the Y button over the center-most crate. You'll destroy the lot of them.

Found this on
Level Four - Technical Difficulties

shortly after using Cannonball to bring down a force field, you'll jump over into a little alcove then you have a checkpoint..jump over a small gap where two enemies appear once you kill them 2 more appear..BUT for now just ignore them select GRAVATTACK and look at top of screen you will see a container... around this are 8 crates position yourself slightly to the left of the center jump then press y..pop.. 30g :)

if you miss just go left drop off the edge..then you will be back in the same place due to the checkpoint so have a another go..of course soon as you have the cheev don't forget to open container for the collectible and kill the 4 enemies.

by the time you get here you will only need between 40/60 crates for

a couple of mins should see you pop that one as well.