keep in mind the fact that reselling value of basic tower is the same as building it. if some stuff (i.e. splitters, ghost) pass, just build tons of basic towers near the exit and own them
got impossible badge. two ways to get it. 1) only upgrade the main base, reload first and shield. it's energy consuming and u might not get disable platinum, though. 2) upgrade flak and shield siphon up to lv 2, upgrade main base reload, fully upgrade flak/shield, and fully upgrade main base. This guarantees disable platinum medal no matter what because flak goes nonstop.
1. can't turn off all the sound
2. TOO REPETITIVE. NOTHING COMPARED TO AMORPHOUS.
3. death achievements are just damn stupid. i thought i was sucking, but got all other badges under 20 deaths.
hence, 1/5