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