So is the Rewards page for anyone else

ed up right now? It's not showing any game titles.
12 May '14 You played a game for the first time! £0.10
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12 May '14 You played a game for the first time! £0.10
✔
12 May '14 You played a game for the first time! £0.10
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12 May '14 You played a game for the first time! £0.10
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12 May '14 You unlocked Power Up in a game £0.25
Anyways, just cleared out the Serious Sam DDXXL achievements. Took about 2 hours.
The Untouchable Sam one is easy, put the difficulty on lowest (Chilled), and lower the speed as Fox suggested, and quicksave as much as possible. If you reload from a quicksave (where you haven't gotten hurt)
it will still count towards the achievement, no matter how many times you reload a quicksave.
Gnarbody's Fool (Kill 50 Gnars) should come in the second stage after killing a million of them to cover the spikes in their bodies, first stage is best for Untouchable Sam. The one that takes forever is Dino's Best Friend because you have to get over halfway through the game to get to the part where the dinos have helmets. It's easy, just requires much more gameplay than the other 2.