Phase1
2 sets of 3
Two groups of matching numbers, like 4 4 4 and 9 9 9. Keep every pair you're dealt; one more card turns a pair into a set.
Phase2
1 set of 3 + 1 run of 4
Build the run from the middle numbers (4 to 9), which can grow in both directions. A Wild fills a gap in the run better than it finishes a set.
Phase3
1 set of 4 + 1 run of 4
Four of a kind is the hard half. Pick the number you already hold most of and chase it from the discard pile.
Phase4
1 run of 7
Seven numbers in a row, any colors. Spread out: one of each number beats doubles. Throw away duplicates first.
Phase5
1 run of 8
Same plan as Phase 4, one longer. Save your Wilds for the gaps rather than the ends.
Phase6
1 run of 9
The toughest phase for most players. Nine of the twelve numbers, in order. Hold every Wild you get and be patient.
Phase7
2 sets of 4
A relief after the runs. Keep your two biggest piles and discard everything else.
Phase8
7 cards of one color
Count your colors on the deal and commit to the biggest. Numbers don't matter at all, so any card of your color is a keeper.
Phase9
1 set of 5 + 1 set of 2
The set of 2 is easy; the set of 5 is the whole game. Wilds count, so a pair plus three Wilds is enough.
Final phase10
1 set of 5 + 1 set of 3
Finish it with the lowest score and you win the game. If you're ahead, go out fast; if you're behind, every point you keep off your hand counts.