BioShock
51 Achievements
1,100
15-20.5h
Toaster in the Tub
The player has shocked an enemy in the water.
10
How to unlock the Toaster in the Tub achievement in BioShock - Definitive Guide
this can be done not long after you get the first plasmid as there are puddles of water everywhere where the water is leaking into rapture.
(The credit for the video below goes the the owner)
For this you need to use your "Electric Bolt" plasmid on an enemy standing in water. The first level has such an opportunity with a small flooded area around a big globe.
This achievement can be earned in a number of places but there is an obvious spot right at the beginning of the game soon after to have acquired the Electro Bolt Plasmid. In the Kashmir Restaurant in the Welcome to Rapture level you will see a Splicer pounding on a locked door. After dealing with the Splicer, enter the door and scavenge the area. Once you exit, there will be two Splicers scavenging in the water and Atlas will mention something about shocking the water. Follow his instruction and you should unlock this achievement easily.