To run through Steam:
Before installing our launcher, delete the "PlaytimeLauncher" folder in the original game folder. Next, run the installer for our launcher and install it in the same folder where you deleted "PlaytimeLauncher". A new "PlaytimeLauncher" folder will appear in its place, and running Poppy Playtime through Steam will launch our launcher.
Will achievements and in-game time be synchronized? Yes!