Hentai vs. Evil (AS)

Ammo Boxes look like this:



Unlike other shooters, the Ammo Boxes in this game give you 1 of 2 power-ups instead of ammo (because you have infinite ammo for your weapon of choice):

- Incendiary ammo
- Insta-kill ammo

To open an Ammo Box, you have to shoot it until it falls out of the air and breaks open. These power-ups only last 30 and 20 secs respectively so don't waste them. Once you've opened your 32nd Ammo Box and picked up the contents, the trophy will pop.

Farming method:

If for some reason you don't have this or any other trophy after finishing all 3 levels, go to the Level select menu and choose the Small Town level but change the mode from "Rescue" to "Survival" then start shooting everything in sight until you have whichever trophy it is you're missing.