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That's a Spicy Meat-a-ball Kill an enemy by attaching a Remote Bomb to them and detonating it.

1st Place at the Science Fair Create all items that contain Chem Fluid and Strong Chem Fluid.

Tinkering Fully upgrade a Praetor Suit category.

Momentum Shift Upgrade a Rune

Jeet Thrives Reduce threat to 0 in the Balefire Flatland region around Jeet's Stronghold

Toxic Terror Defeat Robo-Patrick in the Industrial Park.

Fly Swatter Shoot and knock back Marguerite while she's leaping at you.

Hit Rock Bottom Finish the main missions of Rock Bottom.

Argent Overload Fully upgrade Health, Armor, or Ammo capacity

Life's as extreme as you wanna make it! Clear all the Ski slopes in Sand Mountain

The Smart Driver Complete a Scatter Death Run

Rip and Tear Glory Kill all common enemy types in the campaign.

Ultra Spatula Seeker Get 50 Golden Spatulas.

Shrimp Catcher Defeat Prawn in the Mermalair.

An Old Friend Acquire the BFG

Recovered Supply Raider Complete a game of Supply Raid on Wharf, Capitol, Water Tower or Coal Mine

Skeet Shoot In the Main Campaign, killed 5 enemies while they are falling.

Just A Memory Now Get ending 2.

Hello, Bikini Bottom Find all the hidden Golden Spatulas in Bikini Bottom.

Keep it Rolling Complete the Rolling Ball Puzzle in Mermalair.

Robot encyclopedia Destroy at least one type of every robot in the game while playing the campaign. Bosses don't count.

Specialist Earn the Mastery for a weapon mod

Just Rewards Have 5,000 scrap in your inventory

IPXSETUP.EXE Win a Multiplayer match

Mapmatician Complete the village map.

Sock Concert Find half (40) of Patrick's Socks.

Shoot it Until it Dies Defeat the Cyberdemon

Road Warrior Reach Road Warrior legend rank

Thorough Shopper Complete all Challenges for a single mission.

Bon Voyage In the Main Campaign, killed 20 enemies by knocking them off Columbia.

Digging a Deeper Hole Complete Act 03

Don’t Go - Normal Finish Left Behind on Normal

Vasilisa's Lanterns Baba Yaga: Complete the Challenge in the Wicked Vale

Endure and Survive Collect all comics

Combat tested, Doomguy approved Reach Level 5 in Multiplayer

Outnumbered? No Problem Defeat the Hell Guards

I got this Find all training manuals

Mega Spatula Seeker Get 75 Golden Spatulas.

Shareware Create and publish a SnapMap

Maximum Fully upgrade Max

Ship Shape Reclaim the Flying Dutchman's ship in the Flying Dutchman's Graveyard.

Power in the Machine Complete Act 04

Start of Something Good Clear all threat in Jeet's territory

SpongeBob vs SpongeBob! Defeat SpongeBot SteelPants in the Chum Bucket Lab.

Shanghaied Defeat the Flying Dutchman.

The Small Does Not Rule Defeat Robo-Plankton and neutralize SpongeBot SteelPants' Brain.

Knee-Deep in the Dead Complete the campaign on 'I'm Too Young to Die', 'Hurt Me Plenty', 'Ultra Violence', or 'Nightmare'.

Who's Next? Defeat the Spider Mastermind

Kelp Forest of Fear Find all the Lost Campers in Kelp Forest.

Quit Hanging Around Shoot down a Soldat hanging from the production line in the Factory.