Ion Assault - the true next-gen shoot-em-up experience

Echelon Portal
Used by Echelon Swarmes to travel large distances.
Will open in regular intervals to release new Echelon Swarmers.
Definitely worth dropping a Vortex Grenade next to it!

Echelon Juggernaut
Non-aggressive transport vessel.
Hardly any threat.
Can be destroyed for additional points.