You know when Treyarch hand out 75 achievement points for one achievement, it is going to be F-bomb HARD. Call Of Duty Black Ops Annihilation DLC has one such ambiguously described achievement called Time Travel Will Tell...
Acquire the Focusing Stone? No way will this - however it may sound - involve a simple collectible you pick up. Most likely it will involve going through hoops to turn switches and find vodka. Sound familiar? Good luck with that then.
Call Of Duty Black Ops Annihilation DLC is due June 28 on Xbox Live