You succeeded in creating that sense of urgency, I tried to solve puzzles as fast as I can.
Graphics are minimalistic, but not unpleasant, didn't have problems with it.
First two levels are quite easy (well, it is normal for any game), I wish there were more. But I at least died once on each.
Controls are little tricky: when gun layed on the table, I have to find right spot to pick it up, "press E" popup didn't appear that easy.
Game lacks any sounds or music.
Also, I don't know if it is a bug, but after I fixed the truck on the second level, timer stopped but I didn't get any message. I got forever stuck in my truck.