User:TropicalStormChapsteck/Alpha Triangle

The Alpha Triangle is a rare polygon that is ~20/(sqrt(2)) times larger than the Triangle and gives 1500 xp upon defeat. There is a 1/50 chance a triangle will be an Alpha Triangle.

Strategy
Bullet spammers are very effective against these as they have 20* the health of a normal triangle. This way you can kill an Alpha Triangle with ease.