Its very simple just get all of the achievements and it should unlock.
no you cant
To unlock Artifact 19, you must earn all of the weapon achievements. You are not required to earn them all in a single round, though. A complete list of ALL achievements can be found here: http://www.crazymonkeygames.com/guide/Thing-Thing-Arena-3// The only achievements you need to earn are the "weapon bonuses," with the obvious exception of the Artifact 19 Bonuses. During the round in which you earn the final achievement, you MUST die, as going to the main menu from the pause menu will not save your progress. Once you do this, Artifact 19 will be equipped as the third weapon during any subsequent rounds. It does not have ammo, instead it will "recharge" and you also cannot dispose of it with the space button. Good luck!
Thing thing arena 3 does not have cheat codes. Though it can be hacked with Cheat Engine.
Type into google this: Thing Thing Arena 3 free download Note: has to be typed exactly as said above
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There is no code. But... you should visit arcadeprehacks.com! it has free hacked games. If you play Thing Thing Arena 3... you get FULL HEALTH , FULL AMMO , AND ALL WEAPONS!
Thing Thing arena 3
Currently, there's no such thing as Digimon Rumble Arena 3, and there's no sign that they're making one.
Press space and the mouse at the same time
Well, first you have to be in egypt. Then you have to go to the archealogical dig and play that game. At the end of the minigame it tells you if you have an artifact or no, then the mummy comes after you. But the thing is, the artifact thing is random, you never know when you get it. So it could be hours and hours of playing that minigame until you get an artifact. Hopefully not ^_^ hope I helped:)
Well it depends people have different views on good games personally but i recommend thing thing 3 or thing thing arena 2
there are no codes but play it on acadeprehacks.com and u can be invincible have infinite ammo and all weapons