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