Help with Point and Click game

Hello everyone, I am working on a point and click game

The player moves in two directions only, right and left, using the bullet behavior, as shown in the picture

My problem is

1_ I want to make the player to be mirrored when walking in the other direction, so that it does not appear that he is walking backwards

2_I want to make the player stop when he in collision with some objects and some solid walls

1. You can have an event 'target on created' if target.x greater than player.x then set player mirrored else set player not mirrored (or the opposite depending)

2. Player on collision with wall, set bullet speed 0 and destroy target

Thank you, you solved my problem

1. You can have an event 'target on created' if target.x greater than player.x then set player mirrored else set player not mirrored (or the opposite depending)

2. Player on collision with wall, set bullet speed 0 and destroy target

Another question... If I want to make the player go up and down the stairs, how can I achieve that, like in the picture?

I would remove the bullet behaviour, instead add platform behaviour. When you click you use simulate control left or right to walk. Add appropriate collision to the stairs.

Thank you, it worked perfectly