planks at door

[flatspin]

i enter room with generater, there is a man frozen on short steps next to it, i turn on generater with switch to left of him, i warm up, i jump over him to door at other end of gen, i take chain and padlock off door , go through to next room, break wood that is over next door, go in to next room, to see a man shoring up the door opposite with 2 planks,i go up to him he attacks me i kill//beat him then i climb up planks, warm myself by light, then try to get on gantry/walkway to my left..
behind me to my right in the corner of this first walkway is a large piece of ice poured down the corner of the height of the whole room, when you walk past it you are attacked by a dead crewman. i know this because i used a cheat, but i could not turn that off as i dont like to cheat, it makes the game somewhat pointless.
its like there is an invisible wall stopping me getting onto the walkway, hope that helps
you help me