I currently am on an all-out run at the twenty-five. I'm very stuck at level 21. I have a disk launcher, a bomb drone, a damage buffer, a barrier decoy, and a meteor summoner. I also happen to have 50,000 stored up in my pocket that I don't know what to do with! HELP! My computer's starting to lag and my disk launcher is being rendered useless for awhile well the rainbow spinning wheel spins. I thought these were the toughest levels that DIDN'T crash your browser! Please comment on my profile if you have any tips. I'm so close!
You should have replaced barrier with damage buffer eariler. There is no way to change weapon in the middle of the game as level 1 weapon blows totally.
Damage buffer can be good tank once you upgrade their health to level 10+
The support ships are, frankly speaking, useless. They draw machine gun fire therefore defeats the purpose of using decoy barriers.
DMG is by far the strongest weapon in the game IMHO.
High damage per hit sounds good in theory, in practice, you miss. And you need rapid weapons to shoot down incoming bombs.
Minigun suck compared to DMG because you can't use it from the beginning, is harder to aim, and its upgrades are overcosted. DMG is easier to upgrade and reaches insane level of damage and fire rate rather quickly.
Build a single barrage and DMG at the beginning, then wait until DMG is level 6 you can upgrade the damage and buy damage boosters. Few levels later your DMG is already making 3 damage per hit and it will only go up from there.
Eventually you should have 1 DMG, 1 barrage and 3 damage buffer, with the final buffer upgrading HP to level 10 first. You can upgrade its fire rate to the max. Once one of your buffers reached level 20 and above (buff maxed and has a ton of HP) replace your last barrier with another buffer and use high HP damage buffers as front tanks.
OK I tried it again reaching 13 damage for the last level, blowing up everything so easily at level 25... Level 21 is indeed the hardest, took me a few tries to get past it.
Now getting the feel of it I managed to pack the maximum firepower the game allows (18x3 damage at the fire cooldown of 5, didn't used any achievement bonus to do so)... Just drop the barrier and replace with damage buff as soon as possible, so that the exp won't be wasted by the barrier =)
Well, with this arrangement and that kind of firepower even the hardest level 21 becomes easy...
Oops, should start with double MG or spread MG and nothing else for the first two levels, you don't need a barrier at all (the MG level up faster this way). Build the first buffer as tank, then you can actually build whatever you want.
Jeez that's sweet. Okay I'll start over with SMG and go from there with your strat... my problem was definitely using bomb drones instead of more buffers.