i made it to play all missions in "Obliterate Everything" so i want to tell you some tipps because its not one of the easy games ^^
I saw that most people dont know how to win Stage 2-2, here my strategy: -build two "fusion cores" in the left bottom corner -defend your head quarter with a circle of "autoguns" arround it (those three-barrel guns) -let your "thor missles" destroy the enemy base
Another very difficult mission is Stage 3-5 (actually the final lvl) here my strategy: -build only one "fusion core" -build two ore three "supply docks" in the right top corner -defend your buildings with a great ammount of "laser". These little towers will produce little zombie-rockets AND defend your biuldings against this **** "thor missle" of your enemy. You will have to rebuild these little towers very often so keep an eye on it. Your should have enouth supplies to do this.
I hope this little tutorial will help some people to play all lvls of this great game, the very last mission will reward your work
Build 3 "Fusion Cores" next to your headquater, then 4 "Autoguns" in every corner of your building area (so far away from your HQ as possible). The autoguns will shoot the first attackers.
After that upgrade your HQ with the upgrade "Supplies", build 2 "Accumulators" and one additional "Fusion Core"
Then begin to close the defense-circle arround your base with "Autoguns". Then build some "Heavy Lasers" behind the Autoguns (powerfull, good range), depending on wich reccources you have got. You will need the Heavy Lasers against the big ships wich will come later.
You should also build some additional Fusion Cores and Accumulators then, but just a few (one or two each), you wont need to much of them.
In this mission its very important to upgrade your Headquater, your Fusion Cores and your Accumulators depending on wich reccources you have got.
If you need more Mass (the grey reccource), upgrade your Accumulators with Energy (the blue reccource). If you need more Energy, build some new Fusion Cores with Mass.
Stage 3-3:
The most difficult thing is the beginninge of the stage.
You shoult build one "Fusion Core" in the bottom and three "Lasers" at the front. Then build one "Fighter Bay" and upgrade it with the ship "ADV Fighter".
This structure will protect your base at the begining, from that point you should be able to finish the enemy.
Build more Lasers for Defense and ADV Fighters for Offense.
And dont become desperate because of the enemy defense, it will be enough when only one little zombie rocket hits one of the enemy defense turrets and his defense will become weay, you break threw with more zombie rockets, take over more enemy buildings and - "Victory"
I hope this was helpfull, when i played this lvls it worked pretty good.
did exactly what u said and **** it lasted until the 2 big ship came and were like haha my base and they get my guns and i am like no!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!, i tried your thing 5 times **** big ships