The game starts with a title screen, followed by several instruction pages. Click through. When you get to the menu, there may be no text. Go to the buttons on the left, click the third down. Click the right arrow next to ???????? for English. While you're here, change the textures on a few of the items on the right side of the page and change any settings you want to. Go to the editor. Place items with LMB, remove with RMB, use mouse wheel to switch. Place one block, place a tank, place a box to the right of the tank and a platform to the right of the box. Give it a title, then hit the first button to the right of the text box to save. Esc to exit if the exit button doesn't work. Now go to play, click the arrow to the right, select your level and hit play again. Hitting d once should complete the level, bringing you back to the menu. Repeat. Once you've completed the level 30x, go back to settings and delete user levels. This should complete the final achievement.