Personally for me, in half life 1 I found the pretty much all the grenades useless. For tripmines I never thought they were any use, grenades the npc’s just ran away from them, and the satchels I used once and it was on the tank.
For half life 2 I think it was the Crossbow thing. The superheated bars of rebar were slow, and even though the gravity was easy to factor in when making a shot. It was still a pain.
So what were yours?
Also hello, I’ve been paroosing the forums for about a year now, and decided it was time to register.