The game our team, Cool Guys Studio, made is called Diamond Days. Diamond Days is a 2d-PSP (2d-Puzzle Shooter Platformer). The game was made using Unity 5.0.0f4, we used github for version control and the game was written in C#.
The goal of the game is to get to the end of the level without shooting or shooting as little as possible. This difficulty, however, is controlled by the player as you have the choice to shoot or not to shoot. If the player wants the game to be easier they have the choice, after picking up the diamond, to shoot the enemies. Shooting on the other hand lowers your score. Players who want to take on a harder challenge can choose not to shoot. This makes it harder to beat as the player must avoid all the enemies while they try to beat the level. This challenge is rewarded with a higher score.