Crappy russian: "Talk with infection".
You can pick up two weapons only.
And first some minutes he feels really sick.
Using glepha (boomerang blades).
Some doors can opened only with C4.
You can pick up objects with glepha.
Glepha can be charged with electricity.
Aiming glepha while flying.
In black market you can buy new weapons, sell old and install upgrades, all for money.
Fired gepha unlocks filmed doors.
This field reflects all bullets.
Charged gepha can be exploded remotely.
After killing a stalker, you'll get stealth mode.
Which is useful for silent kills.