Thanks for the explanation. At first we wanted to put a normal (1st type) enemy and make the player swap to go forward and accidentally kill the enemy, but we had an issue with swap and movement mixing up when using them on enemies.
So we decided to make one type of enemy only be affected by movement, and the other by swapping.
That made that introductory level quite harder though, and so we decided to swap it with level 6 (which is now level 5).
But now that you mention it, we could definitely have found a work around and still make a simple level that uses 2nd-type enemies. Thanks for the feedback!