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