Throughout every level of the game apart from the 7th 'Party Bus' there are many traps scattered in them. Traps can be seen easily by holding which will highlight most of the traps on the map with a white target icon
Once the traps are located you need to walk up to them so that they are highlighted and then press
. Most traps have a timer until they are set but some are instant.
You merely need to use 50 traps throughout the game, across every level you play
. SO you do not
need to do this in one level as that is not possible.