I just finished the game in Hardcore Mode with all collectibles, totaling to 100%. Oddly enough, the achievements for completing Hardcore Mode and Collecting everything didn’t pop up.

Regardless, despite all the trouble I had with the Playthrough due to technical issues, I’m still happy to have beaten both Ty 1 & 2 on Hardcore with everything collected. Can’t wait to see if this mode makes it to Ty 3. If it does... Challenge accepted. :D