Perilous is beginning to fell like Routine nowadays, a difficulty should stay a challenge like Platinum on ME3, even with best weaponds it took skill to beat.
But what skills DAMP requires? All the characters are freaking slow, the Archer and Hunter being the worst (that delay with the bow!), there's no cover mechanic and the moves are really clunky compared to ME3MP.
A skilled player in ME3MP meant someone with the ability to change the game with tactics and great execution. It required actual reflexes and skills.
A skilled player in DAMP means someone with a lot of promotions and the ability to predict what will happen in 5 seconds because if you don't predict it before it happens, there's no way you're gonna get out of it alive with reflexes or skills...
DAMP's missing a lot of polish, and I mean a LOT... especially compared to ME3MP.