players can exploit a seemingly never-ending part of a story mission to farm fusion cells, along with other items. Fusion cells are a type of ammunition used by laser-based weapons and can be found in specific locations, or on specific enemy types such as Institute synths.
BobtheGuy45 shared a screenshot of an impressive pile of synth bodies, stating that they left their companion, the Brotherhood of Steel's paladin, Danse, for about an hour at the end of the quest, and that among the pile of bodies were 170 shock batons, 430 institute guns, and 9,199 fusion cells. When a fellow Redditor, Huntercin, commented that they wished there was the option to "", BobtheGuy45 replied that it took "".
The quest sees players going to ArcJet Systems with Danse, where they have to face a large number of enemy synths. Upon entering a large room containing the ArcJet engine core room toward the end of the quest, there will be a point when synths start spawning endlessly, each with a lootable fusion cell.
The aim is to go into a room in the back and push a button to close the doors to block off the wave of synths and start the engine's rocket to fry them. If players don't press the button or progress with the quest, however, the synths will just spawn forever.
The only limit to how many enemies spawn at any given time is the hardware of the console or PC that players are using. While the game will make players think that their companion is at risk if they don't push the button, they can leave them to fight the synths without complaint, creating an easy way to farm thousands of fusion cells and Institute Rifles while players can stand in a safe area and watch.