so...i found a "glitch." not tested on the catapult since i skipped it, but if you shoot the cannon and quickly reset level it'll still go and destroy whatever on the reset level. So extra shot =)
i think i made it to the end of the game cuz it wouldnt let me walk anymore, a house was in my way. and i was still alive. and i also couldnt walk backwards anymore lol
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 "ImmorTall"){kind=icon}
 "Cargo Bridge"){kind=icon}