Looks neat, but a few issues. One, the Plas-Rail and Plasma Repeater are horribly anemic, especially considering how long it takes the Plas-Rail to charge up to fire. It feels pretty useless against large enemies due to not enough damage, and it takes so long to fire and rotates so slowly that it's not even worth trying to use against the smaller enemies it can actually kill.
Two, documentation. Needs more documentation on how to use the items. For example, I can't for the life of me figure out how to actually enable the thermal FCS's thermal ability.