If you want to complete the game with No fails at all and get the medals after then this is for you!
There are multiple ways for this, It might result In an ending
Also, I couldn't put more text for the Second and Third way
1st: Choose the grapple hook, It's at the bottom left.
2nd: Choose the Wait option at the bottom left.
3rd: Choose the pipe-looking vent, at your left.
4th: Choose the leap option, at the Top left.
5th: Choose the paperizor, at the Bottom left.
6th: Choose the Shrink 'n Grow
7th: Choose the Power Armor.
8th: Choose the Prototype disk
Note:(This is a walkthrough for just One way to not fail, Not for how to get an ending)