For members of SteamGifts.com that like to play the games they have won and for giveaway creators that like to see their games getting played.
% of players
Unlock date (CET)
Finish the first level
Kill the enemy with the knife
Kill 4 or more enemies with one grenade
Finish the first episode
Finish the second episode
Finish one episode on at least NORMAL difficulty
Kill co-op partner
Score a goal on the stadium in level 13
Finish one episode on HARD difficulty
Kill the evil pumpkin (while the Halloween lasts)!
Finish all episodes on at least NORMAL difficulty
Finish all episodes on HARD difficulty