Out of the Frying Pan...
Open the first Sealed Gate
...Into the Fire
Open the second Sealed Gate
Aerodynamics
Beat the game in under 20 minutes
Titan Soul
Beat the Game
TRUTH
???
Iron Human
Beat the game in Iron Mode
Iron Titan
Beat the game in Iron Mode with New Game+
Hard Bizkit
Beat the game without rolling rolling rolling (in No Roll mode)
Slimeball
Kill the Sludge titan with no more possible divisions
New Game+
Beat Hard Mode
Laser Eye Surgery
Kill the Eye Cube while pulling back the arrow
Brain Freeze
Kill the Brain with a flaming arrow
Short Back and Sides
Cut all the vines off the Plant Titan
Drug Trial
Succumb to the effect of spores for 30 seconds total
Demo Man
Kill the Knight after destroying all pillars
Ca$h Mon£y
Produce 50 coins in the Chest fight
COME AT ME BRO
Kill the Rolling Titan in under 5 seconds
Bomberman
Drop a bomb on the Lava Blob Titan's head
Leak Spin
Kill the Skull Titan as it spins
Beating the Yeti
Finish in under 10 seconds...
Dental Plan
Remove all teeth from the Mountain Titan then kill it
Titanic
Destroy all icebergs
A Collision of Souls
Knock yourself out in the battle for the Titan Soul
Shadow of the Colossus
Kill the Broken Statue Titan while pulling back the arrow
First Blood
Slay a Titan
The Switch
Trigger the Guardian's switches with the wrong hands and kill it
Iron God
Slay all Titans in Iron Mode