First kill with an Explosive MineSee Choked Up.
First kill with a Stun MineSee Choked Up.
First kill with a Gas MineLater in the game you will start finding materials you can use to build explosive, stun and gas traps on workbenches around the maps. Drop these traps by holding and pressing and make a minion run into them.
I'm In ChargeJaytech
Fought first NPCThis happens early in the game and is part of the story. It cannot be missed.
Stomped first Minion to deathSee Merciless.
Stomped five Minions to deathThis one can be tricky. You can only stomp a minion to death if he has been knocked down, but still has got some health left. This happens randomly and if it happens you have to press + and the right button at the right time in the minigame. At the end of the story you will have done it maybe a few times only. The rest can be done by replaying the first chapter, punching the first minion, hoping that you get it, continuing until it autosaves and repeating the process.
Unlocked first doorSee Professional.
Unlock 5 locked doorsSee Professional.
Unlock 20 locked doorsUnlocking actually means lockpicking with a nail. A lot of doors have to be lockpicked using a nail and solving an easy minigame by matching all symbols in a circle. At the end of the story you will have unlocked about 10-15 doors like this. The remaining doors can be unlocked by replaying the first chapter, unlocking the first door, continuing until it autosaves and repeating the process.