Horrible home SNG structure, strategy?

[tworooks]

Start off with 20BB. Go up every time a player gets knocked out. 6 players.
3 "elimination matches" like on poker superstars.
1st- 13 pts and $
2nd- 10 pts
3rd- 7 pts
4th- 4 pts
5th- 2 pts
6th- 0 pts

Blinds:
6 players left-25/50
5-40/80
4-50/100
3-75/150
2-100/200
15min of HU-150/300
30min of HU-200/400
45min of HU-300/600

Top 12 of 18 go to playoffs, chips in the playoffs depend on how many points you get in the elimination matches.

Strategy?