Talk:Solar Rail Conflict/@comment-177.65.148.206-20140805194953/@comment-190.226.11.164-20140806022253

You level up by killing the enemy corrupt, tenno specters and players, being the first two the ones that give you the most exp. The mods will then activate in the order you've set them in your arsenal, being 1 to 5 on the top line and 6 to 10 on the bottom. Reactors and catalysts do work, but auras have no effect other than adding the bonus points of modding.

Source: Experience and observation.