Doesn't work!
This script should not be not be installed directly. It is a library for other scripts to include with the meta directive // @require https://update.sleazyfork.org/scripts/490565/1347421/%D1%80%D0%BE%D0%B1%D0%BE%D1%82%D0%BE%D0%B5%D1%82%20%D0%B2%20%D1%81%D0%B0%D0%BD%D0%B1%D0%BE%D0%BA%D1%81%20%D0%B1%D1%80%D0%BE%D1%84%D0%B8%D1%81%D1%82%20%D0%B8%D0%BE%21.js
// ==UserScript==
// @name роботоет в санбокс брофист ио!
// @namespace http://tampermonkey.net/
// @version 1
// @description Doesn't work!
// @author H336
// @match http://brofist.io/modes/Sandbox/c/index.html
// @grant none
// @downloadURL https://update.greasyfork.org/scripts/396622/HideAndSeek%20BROFISTio%20HACK%20%7C%20By%20H336.user.js
// @updateURL https://update.greasyfork.org/scripts/396622/HideAndSeek%20BROFISTio%20HACK%20%7C%20By%20H336.meta.js
// ==/UserScript==
(function() {
'use strict';
onkeydown = e => (e.keyCode == 33 && tweenObjects.map(x => x.p.body.world.gravity[1] = 9.7),
e.keyCode == 34 && tweenObjects.map(x => (
x.ntAlpha = x.ntAlpha || x.refP.getAlpha(),
x.refP.setAlpha(.2)
)), 1);
onkeyup = e => (e.keyCode == 33 && tweenObjects.map(x => x.p.body.world.gravity[1] = -9.7),
e.keyCode == 34 && tweenObjects.map(x => x.refP.setAlpha(x.ntAlpha)), 1);
})();