10 is fine, higher strength shortens the time required to operate the wreck ball.
Since you are standing still no matter what it is best to put your movement speed on crawling so while your stamina goes down you also naturally regenerate at the highest speed possible which just means less drinking/faster result.
I'd hardly call anything the Bible of our times» special thanks to MagicManICT I only logged in to say this sentence. by neeco » 30 Oct 2018, 02:57 Default Client, Best Client!
Wrecking Ball has base damage of 40 which falls below Brickwall's soak of 50. Your character needs to add 11 damage to actually damage the Brickwall. 11 squared is 121, so you need that much STR. In that situation you would only deal 1 damage per hit and would presumably consume multiple energy bars as Brickwall has 10 000 hitpoints.
Assuming you do have at least 121 STR it is perfectly doable, it will just consume tons of energy and water.