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