Unexpected Bug 5t4s6

Help this scientist to fix his robot’s bug! try to last as long as possible, unlocking achievements and collecting upgrades in this run’n’gun retro game! 5d2s6m

How to Play: 4z5658

Arrow keys and “WAD” to move.
Mouse left click to shoot (if you have weapon upgrade).
Q or Shift to pause the game.
Spacebar for auto-fire. (upgrade first)
Other controls are in pause menu!