Super Star Wars

This trophy is MISSABLE!
 

A Thermal Detonator

I personally consider this the hardest trophy in the game because its luck based. For this trophy, you'll need to kill 5 enemies with a single thermal detonator (also known as a thermal grenade). A thermal detonator will clear the screen of all enemies. They drop randomly off of killed enemies and can sometimes be found throughout levels. When you pick up a thermal detonator, you'll have a very short period of time to press the button and destroy/clear the screen of every enemy. The words "Thermal Detonator" will be flashing above the top of your screen whenever you pick up one and it also serves as a time indicator.

Recommended enemies to kill for the item drop

Now the best place to obtain this trophy is on Level 8: Cantina Fight. I highly recommend that you do this trophy with Han Solo as your playable character because Han is the fastest character. You'll need to use the Character Select Cheat Code in order to have Han during Level 8 (refer to the Roadmap or Han Shot First! trophy). While on this level, you'll want to make use of the save feature, as you're going to be abusing it a lot here. I do recommend that you make a backup save with Cloud Save or by putting your save file on a USB flash drive. This will prevent you from playing through the other levels again if you messed up. You'll want to continue forward until you get to the first hooded enemies that jump out at you. There should be about 6 of these enemies, but before you kill them save your game. You need to save here because you want one of these hoodie enemies to drop a thermal detonator. In the next area after killing the hooded enemies will be 2 Blue Greedo, 2 Green Greedo and 1 hooded enemy. Whenever you do get a thermal detonator, pick it up last then quickly run and jump over the 4 Greedo enemies and get the hooded enemy on your screen. Once you see the 5th enemy, press the button immediately to kill all 5 of them and you'll unlock the trophy.

My last advice is to take the risk of overwriting your save once you do get the thermal detonator to drop. Just save first before picking it up and proceed to try to detonate the 5 enemies in the next area. This is very risky if your timing of your save was off. If you cannot seem to get it, re-download your Cloud Save or USB save so you can have a fresh attempt again.

Here is a video guide demonstrating how to obtain this trophy:

It should also be noted that it's also possible to obtain the trophy much earlier on Level 5: Land of the Sand People if you're lucky enough. It's around the part where Luke gets the Lightsaber.