Abomination

The Abomination is one of the three bosses that spawn in the Catacombs.

Behavior
Abomination starts off with two spike balls, then gains spike balls as he loses health, they also don't orbit him when he's not attacking. When it spots the player, it will enter a short period of invulnerability.

Strategy
You can try to slip through its spike balls and get as much damage in as possible until just before it starts launching spike balls at you which then you must evade them. After evading the spike balls, you then repeat the same process.

One of the best places to fight the boss is wide open ground, this allows you ample room to dodge the spike balls and kite the boss.

You can try to kite it by using ranged attacks such as spells and bows.

While the Abomination can move quickly through open areas, it is pretty slow while navigating through narrows chokepoints and while climbing up floors.

Brroha's Experience:

Find a loop that you can continually cycle to avoid ever having to get in melee range, if you cannot find a loop, find the longest path to take from the boss and clear it before hand (if on non-hard mode). Just keep backpedaling and finding chokepoints where you can wait for it, fire off a ranged attack or two, then keep running. You need to use ranged attacks, though it is killable at melee range, you will take way too much damage to make it worthwhile. Also, if you have the spell charm, charming him will cause the spike balls to deal damage to himself and he will kill himself within a charm or two.

Champion Variant
The champion variant has a blue coloration and immediately starts with all four spike balls.