Good introduction in the first level to explain the general mechanics and ideas. Not sure if that was by design though: mines did not respawn, so I just kept running into them, until they were all gone - and the level was safe to traverse :)
Sure, some of mines did not respawn, because in real life, mine explode and not respawn, but on the other hand, there are some unbreakable mines, which are not real life based.
