The Rally Adventure Add-on for Forza Horizon 5 has 27 achievements.
Arrive at the Horizon Badlands Outpost
Win your first Horizon Rally event
Win your first Horizon Race event
Join the Horizon Raptors Team
Join the Apex Predators Team
Join the Grit Reapers Team
Win your first Team Champion Race
Win all three Team Champion Races
Become the Horizon Badlands Rally Champion
Win all Horizon Rally events
Win all Horizon Race events
Complete all of Ramiro's Reputation Challenges
Complete all of Alejandra's Reputation Challenges
Complete all of Alex's Reputation Challenges
Complete all the Reputation Challenges
Smash 15 Reputation Boards
Smash all 30 Reputation Boards
Smash 150 Piñata Trucks!
Smash 150 Night Crates
Discover every road in Sierra Nueva
Earn 3 Stars from every freeroam PR Stunt in Sierra Nueva
Complete any Seasonal Activity in Sierra Nueva
Cross your first Split-Gate in a Horizon Rally event
Make your way up to the 7th Tier of Horizon Raptors Reputation Challenges
Make your way up to the 7th Tier of Apex Predators Reputation Challenges
Make your way up to the 7th Tier of Grit Reapers Reputation Challenges
Bank 1 Million Skill Points in Sierra Nueva