I platinumed Killzone 2 so I have played it in and out.
I assume you are talking about the multiplayer, but you get the spawn grenades when you unlock the tactician class (I believe)
Each class has a secondary ability, and the tacticians secondary ability is to send out the flying robots. If I remember correctly you need to work up to and unlock each classe's secondary ability.
The ground turrets are sent out by the engineer class.
You start out with only the basic class available, but as you gain experience you'll unlock them all.
There honestly isn't a wide variety of guns in the game, and I agree taht is a bit of a dissapointment.
- Edited spelling due to alcohol impairment
Platinums: Red Dead Redemption, Killzone 2, LittleBigPlanet, Terminator Salvation, Uncharted 1, inFamous Second Son, Rocket League







