which you can only use cybersonic
and no item usage
your goal is to destroy the target signs (not sure about just enemies only)
however, don't go Rambo towards them, since your cybersonic has little hp
make use of your allies as decoy and attack the targets with the pile bunker.
(your allies will respawn at your post if their hp hits 0, but you will simply get a game over if you die)
and the machine gun (which shoots blaster shots) on the enemies
once the enemy's target post is destroyed, the enemies that are stationed at that post will despawn
however after you've destroyed the 2nd target post, enemies will spawn near your target post.
take those out before they destroy your post (which too fails your mission if they succeed)
you can take them out with a single pile bunker.
completed
note: on the harder version of the same mission, your allies wont respawn once dead and there will be more enemies, however you can play with 2 other players.