Step 1, level select. Step 2, pick the last level. Step 3, beat level, get badge. Get final achievement by landing on the tower and climbing through hatch.
A great strategy is increasing wave density to max and focusing on upping Puddles. In earlier levels it pays off more. Up that same tree of upgrades is the Chovaks to stall enemies in the area, even further bunching them up.
Quests with counts I don't think should start when you get them. That is to say, a count for 200 zombies in 1 run should count what you've already gotten that run once you get the quest. 127 was my count of coins collected, the quest wanted 200, I got 333, but the quest only counted what I earned after.
This game is kinda bad on it's sync. That's the problem I have with most music games like this online. It really just degrades from there into something between luck and perfect skill, thus can make it nearly impossible to complete a task.
Going backward for any reason stalls the game out. I had half a tank of gas and a hill bounced me backward only to go to the garage as a result. Care about that.
I miss the whole Reaper and Mummy spam from the last game. I really hate the shooting system on this one and a new direction was probably not the way to go with a sequel.
That aside, the gameplay adds a certain level of frustration from lack of control, there isn't enough that a player can be doing to keep it fun and interesting. However the game design on the whole is as per usual Nerdook, even if it's a bit of a downgrade in gameplay.
The delay to move even with max upgrades to speed is horrendous. It maxes this game more difficult than it should be. That aside, this game is a dull repeat, though not as bad as it could be.
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