Foundry "soldier wall" opening

[Alvendor]

I think I've got a very strong opening on Foundry. It is not a strict opening in the sense the moves are set in stone. It is rather a general strategy that makes life very hard for player 2.

Short version:
1. Kill off his sniper with a runner, or two if he boosts it.
2. Make a soldier wall 3 tiles in front of your back spawn point and put your sniper 2 tiles behind the wall.
3. Threaten to move in with the sniper. The opponent doesn't have vision so has to guess if you moved the sniper or not. If he guesses wrong you get enough of an advantage to win the game.

Long version:
Example game
The dynamics will be different depending on if you know your opponent or not. I and Blueswimmer95 has played each other a lot. He knows that I am capable of making risky moves outside of his vision. I know that he knows and so on...

Turn 3: I get the sniper. I guess the strategy works anyway, but killing the sniper is just so good on this map.
Turn 7: Notice top soldier move here. I only move 2 tiles as I want to keep this move outside of his vision. This way he doesn't know if I moved the sniper or not.
Turn 8: He checks with a runner and sees that I didn't move the sniper. I earn a wit on that runner exchange as his runner was moved twice while mine only once.
Turn 9: I don't do any move outside of his vision.
Turn 10: He knows I didn't move the sniper.
Turn 11: My runner move will look very much like a sniper move to him.
Turn 12: He checks with the heavy, I still haven't moved the sniper.
Turn 13: By taking out the heavy I have gained so much advantage it is a win for me unless I make any big mistakes.

This opening becomes almost like a game of poker where you bluff that you have moved the sniper, and every time the opponent calls you and are incorrect you gain an advantage. If he guessed correctly and take out your sniper it is not great for you, but you have by no means lost yet.

So, how to counter to this? I guess player 2 can defend his sniper and move it more towards the top/middle. If it is close to the middle it can help defend any attacks and it won't be as bad to let player 1 get the sniper in range of the wit tile. Other than that I don't have any good suggestions =/