Oh...so it's just trying to get an orbiting circle into the box. Wish this game had just explained that. Possibly one of the worst games I've played on Kongregate.
You only need to train stamina to 300 (thankfully), then get reactions up to 700 or so, and pick the tracks with less obstacles (length doesn't matter with 1000 speed).
Ugh....Brazil, China, and USA are nightmares for me - just blobs of land and I have no idea where any cities are, protip: if you don't know, pick the coast.
Die the most you can on Eel part by letting him hit you every time (also be at the top of water to do most damage), then go next to Crab on electric fence, you kill him before he even does Octopus special, but it took me 2 times to win as game is old and rather buggy.
1) Build flat. 2) Avoid attack until you reach population limit. 3) Once you get Wave totem build high as possible then spam it once you have a good mana recharge - the AI never builds high. 4) Swamp is VERY effective, and Whirlpool is great in the early levels.
100% luck based. Obviously it's about patience, hiding, burst attacks on the target. Yet I do all those things and there's still the idiot guard who checks out the spot right where I am, and then STAYS there, my invisibility wears off, and I fail. Every single game...Takes about 10 tries per level. Guard vision should have been halved to make it more enjoyable.
Game became so easy once you have any kind of auto cannon defence I could do study from level 4 to level 11 with this in the background. Looked at level 12 to see the boss, he didn't even make it onscreen :D
Poison water isn't invincible - they can still use a turn when you apply Poison Wave. I reccomend Chaos Desert - overwhelm them initially with the extra Bolts, then apply Special Decrease to prevent them from recovering. Finally launch Burning bolts to kill them (150 damage per bolt...) :D
Just beat it 2nd time. The way to win isn't to spam Riflemen - you just end up with blobs which if hit by a mortar/step on mine can lose you the game from morale loss. Instead focus all upgrades on support, have snipers to hold your first trench/machine-gunners/riflemen, then just pound the enemy into submission. Won the last level with 1 tank getting to the end using this tactic.