Here is the full list of all 42 Holyday City: Reloaded achievements. It takes around 200 hours to unlock all of the achievements on Windows.
Sign a Contract with all Agents
City Facilities 1200 total
Buy 60 Aquarium items
Increase your Profit Paradox to Lvl 50
Reach 580 Trophies
Hire the Manager "Audrey, The Mystic"
Buy the 96th Upgrade
Reach Town Lvl 26 (Holyday City)
Obtain All the Marina Items
Unlock the Airport (Reach town lvl 22)
Obtain the Scuba Gear from the Marina
Reach Town Lvl 31 (Skyline City)
Unlock the City Aquarium
Upgrade your Port to Lvl 20
Reach 365 Trophies
City Facilities 555 total
Buy the 36th Upgrade
Hire the Manager "Diego, the Young"
Do the Investment "Cooling System"
Get your 1st Lab Profit Paradox
Unlock the Marina (Reach Town lvl 14)
Sign your 1st Contract
Go max level in all Time Paradoxes in the Atomic Lab
Buy at least 1111 of each Business
Obtain The Golden Watch Prestige Item
Reach 150 Trophies
Unlock the events (Reach Town lvl 5)
Buy at least 333 of each business
Get 1 City Facility
Get 1 of each time paradox in the Atomic Lab
Buy 1 of each Business
Buy your 1st Upgrade
Reach Town lvl 2
Upgrade your Port to Lvl 2
Do the Investment "Scale Economy-o-meter"
Play 148 hours.
Play 999 hours.
Reach 10 Trophies
Reach 50 Trophies
Hire the Manager "Jimmy, The Advertiser"
Play 2 hours
Play 24 hours.