Quite good for a first attempt, well done!
Just little bugs I found - the gold pyramid bait you placed worked nicely for the first time, but (after death) when I chose to go right instead, I got stuck because I didn't pull the level. Either make a signpost, add a restart button... or stairs. ;) Then, the upper part of the ball doesn't bounce off a tile and it would be more user-friendly if we could press spacebar or so to restart the game.