This is just an executable, and I for one am not running an unknown .exe.
Maybe best if you produce screenshots and post them.
It would also help if you said how much experience you have of using C2. Have you already tried to reproduce this game?
If so, how far have you got?
If you haven't even made an attempt, why not?
** EDIT **
Actually, this is an old game written using Construct Classic. Have you tried contacting the person for the original .cap?