Objective: Survive 170 waves
Before I start with a how-to guide let me give you the top tips for completing this level.
- Use Generators
- Use the default towers
- Upgrade everything
- Play the game on x1 speed
- Pause when building towers and collecting resources from the generators
I’ll start by saying that the key to completing this level is all in collecting the resources on the far right hand side of the level, You’ll need the income to pay the way for your laser towers.
Start off by placing cannons in the bottom right corners with splash towers behind. Then start using generators on the far left, you’ll need them.
Once you’ve built all your generators start collecting the resources and upgrading everything, starting with the splash towers. Build a laser tower in the bottom right to shoot upwards.
Next I built splash, focus and a rocket tower on the bottom row. You’ll need these down here to stop the spawn enemies from getting through. Then I started a vertical line of focus towers and eliminated the pink blobs for extra resources.
Upgrade everything
Fill in the gaps with more splash towers. Keep them fully upgraded.
Some more fully upgraded splash and rocket towers in the middle.
… and that’s all there is to it.
Your Guide to: Tower Defense by COM2US 
Fajar Priyanto
18/09/2011 at 08:52
Cool thanks for the tips
Anonymous
25/09/2011 at 12:35
I passed this level without using any of the generators. I placed lasers on the far right of the buildingplaces and one on the bottom to shoot up. Next to them, I built splash towers. As the level progresses, I upgraded the towers gradually and just as the last wave came in, I blew up the mineral depots and built splash towers there too.
I struggled with this level for quite some time. The catch here is to start building from the bottom upwards, because that’s where the hard-to-beat enemies are concentrated. Once I concentrated my efforts on the bottom row, this level is quite easy to beat.
Colin Asquith
15/11/2011 at 12:45
I followed a similar pattern for hard, but in the hard level I kept losing a few lives until I started to focus the laser in the bottom right on enemies on levels 127, 139, 157 and 164. Basically choose an enemy at the bottom so the laser keeps firing straight up – I had to keep pausing etc. but it did mean that I could damage a lot of enemies at once (because the laser goes straight up the screen and hits all the enemies, once the laser chooses it’s own enemies it’s firing all over the place!)
Zach Rainwater
05/07/2012 at 21:37
On Black Sand, similar to the setup above, use a focus tower on the corners where the two paths converge. On the far top, use a fully upgraded laser. On the far bottom, use a fully upgraded laser where it can hit all three lanes when they start towards the bases. The rest should be splashes upgraded at least once. I never used the resource spots but they would help a lot. Also, use the pause method. I did all that my first try on hard. It works.