Dead Rising Deluxe Remaster

The Rocket Launchers can be picked up from the Special Forces once they arrive at the mall on 22nd Sep 12:00 AM. Not all of the Special Forces have them, the majority seem to have the Machine Gun so you'll have to take out a few before you can grab it.

Once you grab one, take it down into the Underground and find a large group of zombies, the best place I found is where you find Brad after he has been bitten, near the room that has the Maintenance Tunnel key. and then blow them up.

Unfortunately, the rocket launcher seems to do as much damage as a party popper so you might need a few rotations before you get 100 kills.

A Rocket Launcher can be made early game with the Blender Magazine located in the Security Room. This requires a Fire Extinguisher (Two in Paul’s Boss store in Wonderland) & a Toy Mega Blaster (Movie Theatre gift shop). Simply find a group of zombies & let loose & create more if required.

For this achievement all you have to do is grab the rocket during overtime mode from one of the rocket launcher special forces soldiers. Here's a video I made on how to get the achievement.

After completing all cases, special forces will arrive at 12:00 am on Sep 22. You can pick up the Rocket Launcher from the special forces. Not all special forces have them. You can see which ones have it with the big red laser. After you get one, go to the Maintenance Tunnel and shoot it at a large group of zombies. It might take multiple Rocket Launchers before your Achievement unlocks.

Here is a video guide if needed:
Along with all Dead Rising Deluxe Remaster Achievement guides playlist: https://youtube.com/playlist?list=PLztN_tn-6KLa7c1mEmuNPIu1r...