Yes. Stages of grief is hard.
I don't love it, but when I get to the "I need to act out and be all GRRR angry!" place in that process I know it is at least progressing.
Darts could help. I exercise, clean things, or... break out the axe and start taking it out violently on tree branches.
More productive channels for anger because I get a twofer. Anger expressed, and workout done, house cleaned, yard dealt with -- win for me!
Guard against turning anger inward
-- that's can lead to depression. Then instead of climbing UP the emotional ladder you are sinking lower.
Take care of you. Hang in there.