The Alien Invasion Add-on for Worms Battlegrounds has 5 trophies - 2 bronze, 2 silver and 1 gold.
Kill 250 worms in Bodycount (multiple games allowed)
Get a score of 50,000 in Bodycount in one game
Complete all Alien Invasion missions
Don’t allow the UFO to take any damage in level 6.
Use all of the alien weapons