Conversion by UnrealGecko.

After UnrealGecko I replaced still Impalerpsx with impaler (tricky due to the same classname).

Forcefield with udamage. Seeds with nalifruit, springboardpickup 1 and 2 with ut_jumpboots and invisibility....

I kept the turrets though and rebuilt AI paths. The turrets will auto activate too but at least player can get behind. The sentry I mean. 

- Leo