Well, I'll give you a list (counting his Nocturne apparance which chronologywise "overwrites" his DMC 2 appearance). Anime Dante is a sucky one featwise, he looks nothing more that mid meta.
SOME of dante's feats
able to see and interact (sometimes "interaction" includes killing) immaterial creatures (i.e ghosts);
can teleport (actually that's combat teleportation,no portals);
was fast anough to RIDE a rocket from a rocket launcher;
has had mystical scythes from hell vanguard creatures pierce 80% of his body {practically slised in pieces} and still went on to eat his pizza and kill all the grim reaper's ass};
ran faster than a speeding bullet and the air around him started burning;
wields weapons containing fire hotter than the heart of a volcano and enough to damage the abussal cold of the deepest hell;
destroyed a being who could have wiped the normal universe clean of life;
has survived in the underworld;
was unnafftected by both the fire of hell, lightning, light of abaddon, elements of Cerberus (ice), Agni and Rudra (wind and fire0, and the list goes on.
manhandles mystical beats the size of large scyscrappers with brute strength
has a mystical element to all his attacks, even bullets (and able to add his mystical energy not only to weapons to improve them, but also to regular things like his bike);
easily sliced an incoming missile in half without blinking or making it explode;
doesnt need air/water/food to survive,;
easily slices through boulders 10s of times larger than highrise buildings;
easily destroyed a god who was the very embodiment of the abstract despair;
was moving faster than the human eye can persieve while fighting vergil;
was hired by lucifer himself{a being shown later to be beyond the amala multiverse} to hunt down his candelbra of the sephiroth to open the entrance of the sealed hell which yahweh himself had sealed
toyed with the demi fiend, lucifer's greatest creation and in the end only let him live cause he wanted to see more of the ongoing drama and get his JACKPOT
easily withstood and had a part in defeating beelzebub, a demon beyond the amala multiverse
easily withstood the power of metatron an angel one with god and beyond the multiverse and also had a great hand in his defeat
withstood the power of lucifer himself and had a part in his defeat{technically} who was ALSO beyond the muyltiverse and even metatron.
survived the most evil and wicked cloister of hell{5th kalpa} while fighting the strongest demons and looked like he was just having afteroon tea.
resisted and had a hand in defeating kagutsuchi the light that destroyes the universe and gives birth to the next one.
was shot twice in the head and brushed it off as being rather bored and took his own blood and licked it/wrote sumthing on the wall with it
is faster than speeding bullets, as he easily slices through them
when he was impaled through the chest with an extremely powerful mystical sword with further mystical strength by trish, got right up, while casually talking to Trish, pulled the sword out of himself and gouged it in the ground.
is stronger than Sparda, a demon who single handedly forced the entire underwolrd and its lord to fall and sealed it all;
can stop time;
can slow time
can use his shadow to create clone of himself, which is practically imprevious to physical damage;
can traverse in all mystical dimension;
can take "demonic lord" form or Sparda form, resembling his father, in which he's capable of travelling on subluminal speed, can be killed only by demonic magic of high order and able to fire really powerful energy blasts
_________________________
Actually if we count Nocturne (Nocturne feats are marked in the list), then Dante is the strongest demon of his universe nowadays