No problem.
Yes, although I haven't tried it personally, I'm fairly sure you can do that with sound zones and a custom lua script to check if the player is in the soundzone, increment a global counter, check the number of activated soundzones in each soundzone and play a specific sound or video with maybe PlayVideo(e,0) if the number is 5 and kill off the player.
Although it might be better if you are going to use objects as triggers, you may want to skip the soundzone and attach the lua script to them instead to do the same thing.... But just a thought.
Have you started anything yet? If so, post it and I'd be happy to help you with it.
best,
Jan
Windows 10 64bit, Intel(R) Core(TM) i5-4590 CPU @ 3.30GHz, 3301 Mhz, 4 Core(s), NVIDIA GeForce GTX 960 2 gig GDDR5, 16 gigs ram