Here is the full list of all 31 MechaNika trophies - there are 8 bronze, 19 silver, 3 gold and 1 platinum.
You got all the trophies!
You didn't spend any money to complete MechaNika.
You completed MechaNika without a clue.
You completed the MechaNika project.
You discovered Nika's secret lab.
You got the propellant.
You got the reflective panels.
You got the air compressor.
You got the saw disk.
You got the multimedia recorder.
You got the flammable liquid.
You got the multimedia player.
You got the microwave emitter.
You got the transmission chain.
You got the shrapnel.
You got the projectiles.
You got the ignition system.
You won the RoboPodcast quiz!
You won the Ninja Turtles' quiz!
You disguised yourself as grandma Rosemary.
You got a portable TV thanks to your trolling proficiency.
You discovered the end of grandpas' story.
You couldn't stand Dennis' smelly socks.
You discovered your grandpa's magazines in the hidden safe box.
You got your Project Silcharde poster signed by Mango Protocol!
You fixed the Gate of Great Sacrifice!
You made Manson the cat happy with Dennis' socks.
You interrupted a poor girl while she was in the toilet.
You flushed the dirty toilet in the school.
You tried to leave school.
You exchanged your meal for some spray cans.