From the gassed state, KO an opponent in any mode.

Complete the "Kill Switch" Special Ops mission on any difficulty.

Kill 5 enemies with a single grenade.

You completed the mission "Roman's Sorrow".

Watch a PRIDE entrance in Exhibition once without skipping.

You unlocked the special ability of Roman's taxi.

You have completed the first mission.

For 1000 kills in total

For completing operation 7 and 8

For finishing any mission with accuracy 50% or higher

For 500 kills in total

For chain of 7 kills

For completing operation 1 and 2