Digital Extremes announces this weekend will be an open beta stress test for Warframe, their upcoming free-to-play co-op third-person shooter. No key is required to participate, and the event will commence tomorrow at noon eastern time, and will run all the way until Tuesday morning. As an incentive, this will include the opportunity to acquire a weapon exclusive to the stress test:

In celebration of this Open Beta weekend, we have designed an exclusive weapon -- available this weekend only in the market for just 1 credit! The BRATON VANDAL is a Limited Edition rifle that has been tuned and customized by the Tenno. Its colorful design makes it easily distinguishable from the standard Corpus BRATON and has lower fire rate than the standard model, but higher damage per shot. The VANDAL is the first choice among many Tenno for its reliability and mobility-an more refined version of an already popular model.