Invincibility Cheat for Dead Space 2?

[Little Thanos]

Does anyone know if there's an invincibility cheat I could use for singleplayer?

There's this part in Chapter 14 where I'm pretty much in a Softlock because I don't have enough ammo or health to fight off the enemies or run from them. The game has not given me access to any shop or enough crates to supply enough ammo/health and I am not going back 1 or more chapters just to get one.

I've googled some cheats for Dead Space 2 and the only ones I can find are things like infinite nodes and credits (things I would need a shop to access), not what I need for my situation.