Well, here's a design suggestion for dealing with the enemy psychics.
Design : Combative Astral Projection
Since our discovery that some of our soldiers can instinctively sense when a SEEM is in the area, we've done further research into this phenomenon. As it turns out, the soldiers who can sense SEEMs? They're psychic themselves. At least a little bit. They even demonstrate a little bit of psychic phenomena, not very much, easily discarded as trash science... but we're mad scientists. We can make it work. With the help of a little bit of drug use, granted, but we still make it work.
It took some time to work out the proper cocktail of mind altering chemicals, but we've successfully identified the proper mix to let people enter an altered state of conscience, described by some as 'totally groovy', whereupon they can detach, at least to some extent, their mind from their bodies and go wandering out into the astral plane. It's also a fact that it's possible to detect psychics by finding their link to the astral plane, from where they draw their powers. This means that, while wandering around in the astral plane, our own psychics can identify enemy psychics by following the flows of energy. And once they find an enemy psychics 'anchor', well, by way of some lucid dreaming based techniques they can materialize either weapons or change their 'avatar' to a more monstrous, combat ready, avatar.
And then, combat ready and enemy psychic found, they proceed to beat the unholy crap out of said enemy's brain meats, forcing them to either stop using psychic powers and to try to sever or otherwise block off their link to the astral plane to protect themselves, or to start fighting on the astral plane themselves instead of effecting our troops. Either way, they aren't driving our men insane any more, so we win.