Hard Level 13: Twister

Waves: 14
Lives: 1
Cash: $50

You only have one life on this level so be careful! There is only one tower which can quickly and effectively slice through creeps on their straight paths, so that is what I've concentrated on. You need to set each laser up very accurately so that its ray will shoot straight along the DOWNWARD path it is next to. That way it will slice through more creeps as they move away from it. It takes practice to do this.

You will be quite safe if you just stick to lasers for the first few waves. You can see how the top right laser is slicing through lots of creeps at once.

By about level 6 you need to leave enough dollars to buy some blaster towers. These need to quickly be upgraded to level 7 in order to kill the ones that I call the "impervious creeps". As you can see the blaster bullets are diverted around them - except for level 7.

This level took many hours to beat.

DLC Hard Level 2 Hide 'n' Seek

Waves: 13

Lives: 5
Cash: $110


Well, I've done the level and it wasn't too bad once I realised that you need to get as many Blaster Towers (green) up to level 7 as quickly as possible.  That's because anything less than that just bounces off the little round critters. Work quickly and get some vortex towers linked up to the blasters for extra pizzazz.

Hard Level 11 - Defy Expectations - another version

As some people were finding this difficult, I have worked out another way of winning this level. Concentrate on Laser Towers and Vortexes first so that those critters that bounce anything else away can be destroyed. Then slow everything down in the middle section. Finally add a Missile Tower to the Lasers as everything that reaches the third section can be blown up. Fun!

Hard Level 12 - Rabbit Hole

Waves: 38
Lives: 10
Cash: $24

The creeps take their time winding their way to the final destination. I found that setting up the towers early on was helpful, then it was a case of upgrading them at the right moments to keep on upping the ante. Well, I'm there. All levels of GeoDefense successfully completed without a single life lost. It only took three months. Good value for a £1.19 application. Bring on the next one - Swarm!

And here is a slightly different solution for Rich to try.

Hard Level 11 - Defy Expectations

Waves: 15
Lives: 10
Cash: $100

This took me many, many days to work out. You soon find that there is only one weapon which is effective throughout the game. However, despite many attempts, I just could not solve it. Then I tried putting in more Vortex Towers...

Hard Level 10 - Final Victory

Waves: 40
Lives: 10
Cash: $50

I used a nice mixture of colours to complete the task!

Hard Level 9 - Eternity

Waves:19
Lives: 10
Cash: $50

Everything seems fine for about the first seven levels, then something happens to the best-laid plans of mice and men... So get those Shock Towers into place!

Hard Level 8 - Resistance is Futile

Waves: 38
Lives: 5
Cash: $24

There are a LOT of waves on this one. At first the critters get wiped out quite quickly but get faster and faster. So you need to make strategic decisions fast as to which towers you upgrade and when.

Hard Level 7 - Final Push

Waves: 10
Lives: 10
Cash: $40

There is only one way to win. The critters come hard and fast, so that's the way you need to play. Just keep adding towers as quickly as you can. You'll get there.

Hard Level 6 - X Factor

Waves: 15
Lives: 10
Cash: $25

This took quite a few days and experiments with positioning and combinations of towers before I found a way to stop the critters breaking through. Unlike some levels I found that it was a good idea to use all types of tower, relying on their different abilities. For example, the laser towers have a long reach, but the blaster towers concentrate on nearby critters whch can be crucial in the final stages. Here's how I did it to keep all 10 lives intact.

Hard Level 5 - Knit Knack Shack

Waves: 13
Lives: 10
Cash: $100

Hard Level 4 - Fall in Line

Waves: 20
Lives: 10
Cash: $47

Hard Level 3 - Blaze!

Waves: 30
Lives: 10
Cash: $40

Hard Level 2 - Angular View

Waves: 30
Lives: 10
Cash: $40

This is the revised version since the level difficulty was increased in the update. You have to stop ANY of the creeps getting past the first triangle. Otherwise you are dead. Thanks to nespodzany for his solution, which I have adapted very slightly.

Hard Level 1 - The Eye

Waves: 10
Lives: 1
Cash: $24

Unbelievably on the first of the hard levels you only get one life. You'll need to run this one a few times before you realise the optimum times and places to add towers.