Here is the full list of all 28 The Hex achievements. It takes around 8-10 hours to unlock all of the achievements on Windows.
Discovered the truth about Mr. Shrewd.
Receive 4 card readings from Catarina in Walk.
Wooed a Great Kraken.
Crashed Walk
Crashed Secrets of Legendaria.
Find Missing No. in Secrets of Legendaria.
Deal at least 500 damage in a single strike in Secrets of Legendaria.
Score a true KO on Alley Gator in Combat Arena X.
Score a 1000 hit combo in Combat Arena X.
Help Rebecha survive the first wave in Walk.
Free Vallamir.
Perform a 360 No Scope with the sniper rifle.
Complete the original Super Weasel Kid without any help from Mr. Shrewd.
Crashed Waste World.
Activate a gated mod in Waste World.
Buy 10 upgrades from the Scrap Shop in Waste World.
Crashed Combat Arena X.
Crashed Super Weasel Kid '09.
Learn all of Catarina's secrets in Super Weasel Kid.
Crack all the vending machines at The Six Pint.
Opened The Hex.
Completed ???'s memory.
Completed Lazarus' memory.
Completed Rust's memory.
Crack a soda vending machine at The Six Pint.
Completed Chandrelle's memory.
Completed Bryce's memory.
Completed Super Weasel Kid's memory.