If you are still struggling you can always use the invincibilty cheat, which is LB, Up, RB, Up, LB, LB, Up, RB, RB, Up (Up is on the directional pad, not the analog sticks.)
Only lost one "i" there. 4 out of 5 correct is pretty good in my book.
On Team Fortress 2, it helps to have a group of friends who you can play with. One of the achievement even requires 7 other people on your friends list.
Either get rid of "of the" and write "One achievement".
Or add an "s" to write "One of the achievements".
After some more walking, walking, realising your walking the wrong way and then walking the right way a bit and then a bit more walking, you will eventually end up in an apartment block raid (the game gets much better stop worrying).
"you are" of "you're" instead of "your".
For people interested in "realizing" or "realising" I found this interesting article. The article points out how the "z"-spelling is perceived to be an americanism but in fact pre-dates the "s"-spelling. In addition the article introduced me to the ngram.
http://grammarist.com/spelling/realise-realize/Now its time for some real action; keep sprinting to dodge the bullets until you meet 2 Combine in a corridor.
I have quoted this "it's" instead of "its" only once. There are more occurrences in the walkthrough.
There's quite a few turrets around this area so be extra careful when taking cover and let your antlions out to do the dirty work (or even distract the turrets as you run).
"There are" instead of "There's".
There is no best place to get this, just try find the best opportunity for you.
"finding" or "to find" instead of "find".
Here you will attacked by 2 antlion guardians, which upon defeating them will award you with...
"attack" or "be attacked by" instead of "attacked by".
One of these cachés actually has its own achievement onto it, so whilst getting that achievement you should also recieve...