Can I say the metrinome is quite possibly one of the best item pick ups in the game. If you get a decent gun and build up your kills without switching a weapon or getting hit you can be one shotting enemies several floors down and doing massive damage to the bosses. With the regular AK 47 I cleared several floors without getting hit and was doing incredible amounts of damage by the end.
It requires you to be good at dodging when you first get it to build up your damage but once you get going and clear a few rooms you can destroy most enemies, even tough large ones, in a couple shots and usually before they get off more than one attack.
It requires you to be good at dodging when you first get it to build up your damage but once you get going and clear a few rooms you can destroy most enemies, even tough large ones, in a couple shots and usually before they get off more than one attack.