asw_tech_marine_req
asw_tech_marine_req is a point entity available in 
Alien Swarm.
Entity description
This Entity forces players to include at least one Tech Marine in their squad, and fails the mission if all Tech Marines are killed.
Inputs
EnableTechMarineReq- Enables the requirement again, causing the team to fail if all Tech Marines die. If all Tech Marines are dead at the time of enablement, the mission will automatically fail.
DisableTechMarineReq- Disables the requirement, preventing the mission from failing once Tech-specific objectives are complete.
