Sewer Alligator
Find Jones the Crocodile |
Jones is one of the game's best-hidden masks. To find him, you'll need to visit Chapter 5 - Full House.
You'll be tempted to start the mayhem with a crowbar that always spawns in the first room you enter, but will need it after the level, so try to use something else. It's all too easy to lose track of weapons or fling them into unreachable spots when you're using them on enemies, after all!
When the level's over and you're supposed to get into your car, head outside and circle around the building to reach a manhole near its south-eastern corner. Approach the manhole with the crowbar in hand to open it, then climb down into the sewer.
After a brief conversation with the mask's previous owner, you can pick up the crocodile mask (AKA Jones) like you would a weapon - the achievement will be yours soon after.