The skills in "No More Room in Hell 2" are a very important component of combat power in the game, and if you want to unlock skill slots, you can collect supply items and extract them from missions. Your character gains experience points after a match based on the amount of supplies brought home. If your character levels up, you'll unlock more skill slots.
How to unlock skill slots in Hell is Full 2
Each new responder starts with a passive skill related to their profession. If you want more skills, you need to collect supply items and extract them from missions. Your character gains experience points after a match based on the amount of supplies brought home. If your character levels up, you'll unlock more skill slots.
To acquire new skills, click the character tab on the main menu and select the empty skill slot in the lower left corner of the screen. This will open a new window with three different skills. Only one skill can be selected per slot, and it cannot be reset, so choose carefully.
Please remember that permadeath exists in this game. If your character dies, they are gone forever, taking all their skills with them. You'll need to retrain a new responder the next time you play, so make sure you have friends to protect you in Hell is Full 2.