Dunderfloff

Weaponsmith Made one of every custom weapon

10 Minutes of Create Spend 10 active minutes in Create mode

Two Birds with One Stone Destroy two or more enemy robots at once with the LFE gun.

Barrel of Death - Kill 3 Helghast using your environment Kill 3 Helghast at once using the surrounding environment

Bronze Revenge Obtain 24 medals on the original Arkham City ranked maps (as Batman)

Forgive Me, Father... Take sanctuary in a monastery to clear Heat Level 5.

An Impressive Display Earn a Four-Star Rating in any Challenge Arena

Snuffed Out Defeat Flame Face

Skewered in Space Impale an enemy into a Decompression Window to cause it to blow out

Tell Me a Story Completed 10 substories.

Venting Frustration Spend 7 minutes on steam vents

Opposite of Fail Complete all Fale Quests

Temper Temper Hunt your first tempered monster.

My Boom Stick Kill 6 enemies at once with Line Gun's Alt-Fire (single player only)

Silence Those Guns Destroy every enemy Cannon

Dabbling Collector Obtain 5 pieces of Treasure Art.

Hara Kiri Kill yourself with Kotal Kahn for 1 round and win the match

Vault-Tec C.E.O. Collected 20 Vault-Tec Bobbleheads

Paradigm of Humanity Reached Level 20 with Neutral Karma

Just Peachy Collect all the Peaches in the Scroll of Destiny

Feat Fetish Perform every Feat.

Dragon Slayer Defeat the Armored Dragon Stage 2

YOLO Deceptively Beat the Last Chapter Without Dying on Normal Difficulty or Harder

Flying Dragon's Trophy Slayer of Demon “Blue Flying Dragon”

Shielded from Harm Purchase all Shield Upgrades.

Sins of the Father Completed chapter 6.

Never Saw It Coming While invisible, used Peeping Tom to knock out 15 enemies with a melee attack.

Bull in a China Shop Cause maximum damage in all Arenas (does not include Practice mode)

(10+1.5+3.5)x Get a multiplier of 15x

Master Conductor - Electrocute 3 Helghast Electrocute 3 Helghast with a single burst from the VC5 Electricity Gun

Combo Nerd Achieve a 125 Hit Combo

Get Up, Mr. Bubbles! Score an Aerial goal while playing in AquaDome

My Way Complete Act 4 without using mission select.

Almighty Complete a Test Your Might Tower

Shadow of Your Former Self Defeated 5H4D0W-TP.

A Short Introduction Begin a new hunt with Torvin.

Impregnable Defense Obtain five highly rare pieces of armor.

Perfect Boss Beat the first boss without dying.

Chain Reaction Damaged fifteen foes with an exploding enemy, using the Radar Range in Burial at Sea - Episode 1.

The Imaginative Endure Complete the Game on Normal Difficulty

All Fall Down Destroy Gravitron 2

End to Major Combat Operations Complete Act 5 without using mission select.

The Sampler Platter Kill a Necromorph with every Weapon in the game (single player only).

Double Punch Kill 25 shielded enemies with a Stun Blast then Plasma Blast combo.

They Went That-a-Way Completed They Went That-a-Way.

Tough as They Come Purchase all Health Upgrades.

That's No Hero Defeat the Hero in Scenario Campaign Mode.

Consume This Too Use 10 Skip Challenge Star Consumables

Only a Real Master Beat an opponent while they still have 90% health and you have 10% or less health remaining

One Last Wish Fulfill Bopo's wish for snow