Zombie Apocalypse 03 (Hard) - Ultimatum

MISSION DESCRIPTION We have cleared zombies and established a base and research lab where all this outbreak started. Research team was able to find the source and is on developing an antigen that can be used to wipe out the zombies from the surface of Europe. Your mission is to protect these research labs until they finish their work. We have recon team report that zombies are coming back to their homeland. Prepare for the attack. You now have a clearance to use all arsenals, including Flame Tanks and Yak fighter that shoots incidenary molotovs. Use them wiaely, as Zombies will be coming from all sides of the base. Godspeed, commander. MISSION OBJECTIVE - Protect Bio-Research Lab and Hospitals located in the center of the base. Losing any one of the four results mission in failure - Zombies approach the base from Northwest, Northeast, East, Southwest and Southeast. Numbers increase as time passes MISSION TIPS: - Compared to the normal mode, Hard mode features stronger Zombies (+50 health, +25 attack damage) and they will appear bit more frequently. - Also, this Hard difficulty has 5 more minutes (based on Normal speed time) - Both Flame Tank and Yak plane uses flames that are effective against these zombies. Their flame is also lot faster than Flame Turret. Focus building on these two units - Zombies are able to chew through the concrete walls. Instead of spending efforts into building concrete walls, build more units instead. - Try to build more Tesla Coils, Flame Turrets, Pillboxes in the place that Zombies won't have an easy access (behind cliffs, etc) - If you are able to build more MCVs, they will shorten the time to build defense structures. - You will run out of ore very fast. Even in the midst of chaos you are in, try your best to build more refinery/ore trucks - There is a secret place with money cache though...