Best strategy: block off a zombie with barricades. If you are lucky, the zombie will be part of the timer and will continue attacking a wall until it dies. If you block it, if will keep attacking the wall and the timer never resets.
EASY BADGE: you will get it while grinding for the medium badge. MEDIUM BADGE: grind to get better parts and upgrade the parts. Upgrading durability, energy, and thermo def/resist is necessary. HARD BADGE: Jump to the red planet (collect 100 energy from the core of the 1st planet). The achievements page will then show the ones on the far right. Get those achievements. GRINDING GEMS: Dodge, dip dive, duck, & dodge lasers/obstacles/bugs towards the gems. Lower grade gems are first found on the 1st planet's upper levels. Higher grade gems are on the lower levels and the red planet. PLASMA: Get to the core of the 1st planet (low yield). The red planet has a higher amount and yield per collection of plasma; collect them there. BLOCKS: I get high durability, energy, & power and let the miner go as far horizontal as possible to mine a long tunnel.
It's a rush to the last level since the difficulty is not too hard. When you reach the last level, it's a grind fest.
Auto-pistol glitch: Click and hold the button down. Drag the mouse cursor off the play screen. Pistol should keep shooting. Return to play screen and aim. You will have to redo this if you use abilities.
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