This just comes pretty much with playing it through. See stalker.

When I got this I put my sensitivity to the max. The biggest key in this one is to kill as many spiders you can the first 3 waves. I killed all of the centipede except one little one and let him run a little bit while I just killed the spiders. I believe you have to keep 2 little centipedes for wave 2 before they become fast. After that you'll find some times where you get slow centipedes and remember not to kill it just wait for spiders. Also if you can, try to kill the centipede right in the middle as it comes down. You create a trap where it comes straight down almost every time. Then at the beginning of each wave you can just shoot in the trap and kill most of the centipede.

To get this I set my sensitivity to the very lowest. I pretty much just stayed a little left or right of the middle. There are two sweet spots if you can find them where the spiders don't hit which are a little left or right of the center. If you see a spider moving slow enough for you kill that as quick as possible. Spiders again are the best points in this.

Again just kill the spiders at the beginning through the first three waves or so.

To do this try and kill as many mushrooms as you can before the centipede hits the bottom. Do not kill the centipede in any way. Once the centipede has reached the bottom you can try and live as long as possible and keep killing mushrooms until you die. Just do not advance waves and pretty much commit suicide when the centipede hits the bottom.

This is where the trap system that I talked about in stalker comes into handy. The first couple of waves are key. Try to kill the centipedes as soon as they come down so you create the traps. Also when they round corners just nail them all in one line. If a centipede comes close to the bottom commit suicide. Just do not let it hit the bottom.

Again kill the spiders at the beginning. They start you off with good points. Create a trap if possible, there are many mushrooms on millipede so it is very very hard to do but just kill the spiders and take the advanced start once you hit 30k into advantage.

Kill the spiders at the beginning, and just take the advanced start to advantage once you hit 30k. Hit the millipedes as the round the corners best way to wipe out the waves. Use the DDT in smart ways. Try to kill a whole millipede with it and you will get much more points. Try to save the DDT's best as possible. Set your sensitivity to the lowest.

Set your sensitivity to the lowest here. There are the same two sweet spots in this as in centipede (to the left and right of center). Again kill the spiders best you can and try to use the DDT to the best of your advantage.

Well just kill the spiders at the beginning. The same technique as the others, and this one will fall into your hands very easily.

For this you have to kill a spider with a DDT. Just wait for the spider to bounce back up and nail the DDT and you will get the achievement.

Well for this you try to set up a trap system but doesn't work well in millipede. So you have to kill the when they round the corners of sides and mushrooms the best you can. If a millipede comes anywhere close to the bottom just commit suicide with it. Whatever you do don't let it touch the bottom.