Press V to change view,
C to crouch,
hold shift to run
R to reload
Link the pylons by firing at them in the drone view.
You have one life, don't get hit by monsters.
You see monster when they are aggro.
In drone view, you always see the monster.
Crouching, walking and running changes the monsters aggro range,
Follow the pylons and link them all to reach the portal
Start with the first pylon