G-Regulated

Long Way Down You performed a drop assassination of at least 150 meters in the Kill Cascade challenge

Extermination Master Win 25 public matches of Extermination

Titanic Destroy all icebergs

The End You beat the game!... but that's not the end, is it?

Advanced gravedigger Buried 10 bodies.

Overthrow the King! Defeat the Golem King

Road Warrior Achieve ANY rank on ONE Contracts side mission

Legend Get a score of 20000

Robopede Defeat Robopede.

Echelon Recruit Complete the game in Normal difficulty.

There's lots more where those came from Earned 10 Gold Medals on Assassination Missions

Legendary Hero Reach Level 20 with one character

Those Left Behind Recruit every adventurer and finish the game.

Mind Blown Romance the Emperor.

Whale Sign Unlock all the daisies in Whale Sign and complete the level

Grimmest Of All Time Defeat Pazuzu -- Harmony of Dissonance

Rock and Roll Stop Dr. Wily's plans and complete the original Mega Man.

Strafe Magnate Kill 500 infantry with cannons in a single game

Runt Kill Runt.

Casanova Court Lady Stephanie.

In The Hallow Allow your world to become Hallowed.

Trivia Master Answered Twenty-Five Trivia Questions Correctly
12/25

This Time for Good Defeat the Minotaur Lv2 -- Harmony of Dissonance

1-800-GODDAMN Get A+ on all levels on normal

Full House Get married and have two kids

Pet Collector Find all the pets!

Lich, Please Complete Strongmont

A Friend's Promise Defeat Julius -- Aria of Sorrow

Wish upon a Star Collect 30 Stardust.

Collector Complete all of Susan's collections.

Wow! You obtained the Hero Sword! Acquired the Hero Sword.

Wheat From Chaff Gain 25 PERFECT medals

The Golden Ending Earn a Gold Medal in every On-the-Go event in the world
1/100

For We Are Dead Defeat Legion (corpse) -- Harmony of Dissonance

One Vein, One Nail Defeat Talos -- Harmony of Dissonance

The Mystery of Dr. Wily Take out the Alien and complete Mega Man 2.

Maverick Score 10 points in Survival without firing a single bullet

Moon Worshipper Carry 5 Lunar items in a single run.

Who Will Protect Them Next Time? Defend the Free World against your invasion

Ping Pong Parry the same bullet 3 times after it bounces back from The Hand's shield

Decorator Unlock 50 customization items.

Flag Facsimile Performed The Ole Switcheroo With The Replica Flag

Dracula's Trusted Ally Defeat Death -- Harmony of Dissonance

In the Country of the Blind Defeat the Cyclops -- Harmony of Dissonance

Peace Stalker Complete Police Station mission without firing a bullet.

McLovin Court Theresa.

Ca$h Mon£y Produce 50 coins in the chest fight

Gone In Sixty Seconds Avoid the Grim Reaper for over 1 minute.

Armory Collect all the armor sets.

Rig Architect Build all levels of all buildings on the rig.