@Left4dead 2 Version:
1. I added a chat command to show the players how this plugin works. Simply type !miss_help in the chat.
I have set the killed_amount value to "20".
2. I removed the gamemode check. This version works in all gamemodes.
PrintToChat(client, "[MISS] Owners of a SHOTGUN can use 3 missile types.\nFor every 20 killed infected you get 1 missile.");
PrintToChat(client, "[MISS] Miss1 = Gren. Launcher. Stand still, Press USE and shoot.\nMiss2 = Automatic Tracking Missile. DUCK and press USE while firing");
PrintToChat(client, "[MISS] Miss3 = Laserguided. Laser-Guided Missile.\nYou must be walking, press USE and shoot.\n Missile follows your mouse during flight");