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Half-Life 2: Episode One Hints
Rollermine-Grabbing Tips
1 of 5: Make sure you're charged up to 100 health and 200 armor before you press the button to drop the rollermines.
2 of 5: As soon as you hit the button, immediately back away and start hitting rollermines with the gravity gun's primary fire to knock them away before they can zap you.
3 of 5: When there's only one left, use the grav-gun's secondary fire to suck it in and hold onto it.
4 of 5: If you accidentally knock all the rollermines away, just hit the button again to get some more.
5 of 5: If you lose any health or armor during this process, quickrestore and try again. You won't be able to access that recharger again after you take a rollermine up to Alyx.