Close Enough: Obtain a 2+ jump item
Superhero: Get at least one stat to have at least an extra 20% (Example: Armor gives various stats like +5% Melee Damage)
Home, Sweet home: Have a house with a bookshelf, table, bed, chair, clock and a pet (fish, bird, etc)
Stay Healthy: Obtain 500 health
Angel From Above: Touch the top of the world
Demon From Below: Touch the bottom of the world
Platinum Status: Obtain a platinum coin
This isn't even my final form!: Fill all vanity and dye slots for your armor at one time
You thought you could kill me?: Survive a boss fight with less than 50 health left
Megaton Weapon: Obtain a weapon with a strength of over 100
The Hype: Have 4+ Potion effects active at one time
That's my ideas for some achievements :3