no you cant
Its very simple just get all of the achievements and it should unlock.
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!
In the Arena - 2011 2011-04-19 was released on: USA: 19 April 2011
In the Arena - 2011 2011-05-19 was released on: USA: 19 May 2011
In the Arena - 2011 2011-07-19 was released on: USA: 19 July 2011
Custom Robo Arena was created on 2006-10-19.
Anna Arena died on August 19, 1974, in Jesolo, Veneto, Italy.
You have to beat the arena, then go back to the spot where the arena is, click on true arena and there you go.
Dorothy Hack was born on January 19, 1939, in Los Angeles, California, USA.
The Civic Arena, now the Mellon Arena, opened in 1961. The first show was the Ice Capades on September 19, 1961.
There are 19 rows in section 205 at Joe Lewis Arena.
Herman Hack died on October 19, 1967, in Hollywood, California, USA of heart attack.