Unvanquished is an open-source FPS game featuring team-based strategy and RTS elements, pitting humans against aliens in a futuristic setting.
https://forums.unvanquished.net/
Non-stupid version of the spiker. Should look somewhat like the old acid tube and shoot a single short-ranged sharp tentacle in the direction it's facing towards, with a very limited ability to aim.
One of these? 
I think norf had a pretty good idea to make the spiker better.
Maybe like this:
or this one that uses a tentacle to suck in enemies.
