The Worms Reloaded Retro Pack Add-on for Worms Reloaded has 10 achievements.
Retro Pack: Complete Retro 1 without the Mayor taking damage
Retro Pack: Complete Retro 4 without taking damage
Retro Pack: Complete Retro 6 without picking up a Health Crate
Retro Pack: Complete Retro 7 and kill all the enemy worms
Retro Pack: Complete Retro 10 with all 3 player worms alive
Retro Pack: Complete Retro 11 without the Toy Master taking damage
Retro Pack: Collect all the crates on Retro 12
Retro Pack: Complete Retro 1-5
Retro Pack: Complete Retro 6-10
Retro Pack: Complete Retro 11-15