Another SC1 remake that has been popular during the times. No lives makes this a challenge for players, and using strategy to figure out a way to trap the waves from finishing the player off.
Lurkers can burrow underground; hit multiple targets to kill many all at once.
Hydralisk hero Hunter Killer can be created by sacrificing 2 hydralisks; and deals more damage to a single target.
The waves grow larger each time one is triggered.
Good luck; you are on your own to defend yourself.
Search "Lurker Individual D" to find my game on starcraft 2 :)
Here is a brief video that describes how the game works.