...The Harder They Fall

...The Harder They Fall is a trophy in Fallout 4.

Requirements
Kill five giant creatures. The only two enemies that count for this trophy are super mutant behemoths and mirelurk queens.

If you are travelling with a companion, you must be the one to fire the killing shot in order for it to count towards the trophy.

Super mutant behemoths

 * Outside of Fort Strong.
 * West of Natick Banks.
 * West of the Suffolk County charter school.
 * South of Walden Pond at a playground.
 * Swan is a unique super mutant behemoth and can be found at Swan's Pond.

Mirelurk queens

 * At the Castle as part of the quest Taking Independence.
 * At the Murkwater construction site, must be defeated in order to use the area for settlement.
 * Spawns at Spectacle Island once throwing the circuit breaker.
 * At Nahant Chapel, nesting near the coast.
 * In the basement of the Massachusetts State House.

Bugs

 * Progress towards the trophy may be awarded when an NPC kills a behemoth without the player having to do anything.
 * Trophy will not unlock at times even with previously killing swan, went back to swans corpse resurrected via console. Killed Swan again and achievement unlocked.