Hi!

I just bought the Crysis ME on the Steam sale.
I beat the game on hard and I stuck on last enemy. The big alien. Shoot down it's turret and try to use the TEK gun. But it's wont lock-on. I check the vids and my game don't do that.

It's a known bug or try to restart the level or the game? Or caused my Logitech keyboard+mouse?

did you shoot down the hatch?..you need to shoot the hatch down first then it will lock on

Well first you fight the Ceph Hunter (the big blue alien machine thing with 4 legs) while other floating Ceph Scouts are trying to shoot you. You gotta stay within range so Helena (or whatever her name is) can use your suit as a weapon or whatever she says to weaken the Hunter. After all that then the huge alien battleship thing (Ceph Warrior) is going to try to kill you. You need to destroy 4 turrets on it then Psycho and Helena are going to say some stupid comments then a bunch more Scouts are going to try to kill you again. You need to kill the Scouts then Helena will tell you when she lowers the shield and when to use the TEK gun. After that the you need to kill more Scouts again and then Helena will tell you when to shoot the TEK gun again. Then the Ceph Warrior is going to raise up an begin to fall on the USS Constitution. It has 2 more turrets that you can take out but you don't have to. At that point you just have to shoot the hatch open (I just used the missile launcher) then shoot it with the TEK gun again. That should take the thing down then you have to run the the VTOL and jump into it.

Hope that helps.

how did you get the tac gun i cant open the door after the attack its blocked

When the attack begins Nomad will say he has to stop in the lab and pick up then TEK gun. At that moment just go back to the lab and get it. You need to power punch some of the the doors to get through. It's pretty self explanatory, you'll figure it out.

how did you get the tac gun i cant open the door after the attack its blocked

In this order.

1. Go see old guy
2. Goto the lab
3. Goto the bridge
4. Goto the deck (don't punch the locked door (red light) at the bottom of the stairs glitches the game)
5. Kill all the flying buggers, then you will be told to take the hanger lift.
6. just do as your told & you will be ok.

if you want to glitch the game and open the locked doors (red light ajared doors) the when at the bottom of the stairs after your told to go on deck, punch the door till it's shut then strong punch it till the spoiler you will find out, then you want to punch the hinge of the door & it will swing open

This glitch is on the cryengine 3 versions.