Really quick tip here, seen as how its a bit strange having the grenade button out of the way and the right mouse button is not used; asign grenades to right mouse button... helps a great deal! No doubt some of you will have done it already... but it helps!

Also, for those of you who want toggle crouch just assign that to right mouse button instead... extremely convenient!

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It's a good idea, but there is an entire suggestion board right here :
viewforum.php?f=6

yea but that is to suggest gameplay features isnt it? Not game tactics...

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Oh, then I misread your intent.

My apologies.

actually im using knife with right mouse button, its more comfortable for me
its just because the "G" button is grenade in almost every game so its like a reflex already, and knifing isnt comfortable to press on "V" button, so for me its RMB
you know you can also knife the enemy through the walls
i was knived like this and thats how i learnt xDD