You are going to use the W, A, S, D keys to move around, jump, and duck over obstacles. Grab portal guns along the way, and use them by pressing the G key, in order to get past places which would not be possible without such technology. You always have to reach the end of the level, and you have to give it your best so that you clear all levels, and do not lose three lives because that is your limit. Good luck to everyone, and we hope you have a great time, just like we have had!